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Finding the Fourth Proportional to 529,700.92, 731,001.68 and 287,999.76

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Solution

The fourth proportional to 529,700.92, 731,001.68 and 287,999.76 is: 397,447.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,700.92 : 731,001.68 = 287,999.76 : x
  2. Step 2: Convert to fraction form
    529,700.92/731,001.68 = 287,999.76/x
  3. Step 3: Cross multiply
    529,700.92x = 731,001.68 × 287,999.76
  4. Step 4: Simplify right side
    529,700.92x = 210,528,308,399.60
  5. Step 5: Solve for x
    x = 210,528,308,399.60/529,700.92
  6. Step 6: Final answer
    x = 397,447.50

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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.