Home / 1,055,309,907.60-1,582,964,861.40-472,425,418.80

Finding the Fourth Proportional to 1,055,309,907.60, 1,582,964,861.40 and 472,425,418.80

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Solution

The fourth proportional to 1,055,309,907.60, 1,582,964,861.40 and 472,425,418.80 is: 708,638,128.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,055,309,907.60 : 1,582,964,861.40 = 472,425,418.80 : x
  2. Step 2: Convert to fraction form
    1,055,309,907.60/1,582,964,861.40 = 472,425,418.80/x
  3. Step 3: Cross multiply
    1,055,309,907.60x = 1,582,964,861.40 × 472,425,418.80
  4. Step 4: Simplify right side
    1,055,309,907.60x = 747,832,837,592,579,072
  5. Step 5: Solve for x
    x = 747,832,837,592,579,072/1,055,309,907.60
  6. Step 6: Final answer
    x = 708,638,128.20

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Half scale
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Double scale
Find fourth proportional to 1,055,309,908.60, 1,582,964,862.90 and 472,425,419.80
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.