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Finding the Fourth Proportional to 529,487.71, 730,697.83 and 287,770.85

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Solution

The fourth proportional to 529,487.71, 730,697.83 and 287,770.85 is: 397,126.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,487.71 : 730,697.83 = 287,770.85 : x
  2. Step 2: Convert to fraction form
    529,487.71/730,697.83 = 287,770.85/x
  3. Step 3: Cross multiply
    529,487.71x = 730,697.83 × 287,770.85
  4. Step 4: Simplify right side
    529,487.71x = 210,273,533,999.46
  5. Step 5: Solve for x
    x = 210,273,533,999.46/529,487.71
  6. Step 6: Final answer
    x = 397,126.38

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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.