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Finding the Fourth Proportional to 529,305.64, 730,444.79 and 287,590.17

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Solution

The fourth proportional to 529,305.64, 730,444.79 and 287,590.17 is: 396,876.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,305.64 : 730,444.79 = 287,590.17 : x
  2. Step 2: Convert to fraction form
    529,305.64/730,444.79 = 287,590.17/x
  3. Step 3: Cross multiply
    529,305.64x = 730,444.79 × 287,590.17
  4. Step 4: Simplify right side
    529,305.64x = 210,068,741,331.71
  5. Step 5: Solve for x
    x = 210,068,741,331.71/529,305.64
  6. Step 6: Final answer
    x = 396,876.07

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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.