Home / 1,119,638,862.20-1,679,458,293.30-712,499,943.80

Finding the Fourth Proportional to 1,119,638,862.20, 1,679,458,293.30 and 712,499,943.80

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Solution

The fourth proportional to 1,119,638,862.20, 1,679,458,293.30 and 712,499,943.80 is: 1,068,749,915.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,119,638,862.20 : 1,679,458,293.30 = 712,499,943.80 : x
  2. Step 2: Convert to fraction form
    1,119,638,862.20/1,679,458,293.30 = 712,499,943.80/x
  3. Step 3: Cross multiply
    1,119,638,862.20x = 1,679,458,293.30 × 712,499,943.80
  4. Step 4: Simplify right side
    1,119,638,862.20x = 1,196,613,939,590,693,888
  5. Step 5: Solve for x
    x = 1,196,613,939,590,693,888/1,119,638,862.20
  6. Step 6: Final answer
    x = 1,068,749,915.70

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Double scale
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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.