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Finding the Fourth Proportional to 529,057.38, 730,104.45 and 287,344.67

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Solution

The fourth proportional to 529,057.38, 730,104.45 and 287,344.67 is: 396,538.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,057.38 : 730,104.45 = 287,344.67 : x
  2. Step 2: Convert to fraction form
    529,057.38/730,104.45 = 287,344.67/x
  3. Step 3: Cross multiply
    529,057.38x = 730,104.45 × 287,344.67
  4. Step 4: Simplify right side
    529,057.38x = 209,791,622,250.78
  5. Step 5: Solve for x
    x = 209,791,622,250.78/529,057.38
  6. Step 6: Final answer
    x = 396,538.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.