Home / 804,821.40-1,207,232.10-521,386.20

Finding the Fourth Proportional to 804,821.40, 1,207,232.10 and 521,386.20

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Solution

The fourth proportional to 804,821.40, 1,207,232.10 and 521,386.20 is: 782,079.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    804,821.40 : 1,207,232.10 = 521,386.20 : x
  2. Step 2: Convert to fraction form
    804,821.40/1,207,232.10 = 521,386.20/x
  3. Step 3: Cross multiply
    804,821.40x = 1,207,232.10 × 521,386.20
  4. Step 4: Simplify right side
    804,821.40x = 629,434,157,137.02
  5. Step 5: Solve for x
    x = 629,434,157,137.02/804,821.40
  6. Step 6: Final answer
    x = 782,079.30

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Double scale
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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.