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Finding the Fourth Proportional to 529,420.20, 794,130.30 and 494,428.20

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Solution

The fourth proportional to 529,420.20, 794,130.30 and 494,428.20 is: 741,642.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,420.20 : 794,130.30 = 494,428.20 : x
  2. Step 2: Convert to fraction form
    529,420.20/794,130.30 = 494,428.20/x
  3. Step 3: Cross multiply
    529,420.20x = 794,130.30 × 494,428.20
  4. Step 4: Simplify right side
    529,420.20x = 392,640,414,794.46
  5. Step 5: Solve for x
    x = 392,640,414,794.46/529,420.20
  6. Step 6: Final answer
    x = 741,642.30

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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.