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Finding the Fourth Proportional to 529,363.32, 730,522.32 and 287,648.80

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Solution

The fourth proportional to 529,363.32, 730,522.32 and 287,648.80 is: 396,955.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,363.32 : 730,522.32 = 287,648.80 : x
  2. Step 2: Convert to fraction form
    529,363.32/730,522.32 = 287,648.80/x
  3. Step 3: Cross multiply
    529,363.32x = 730,522.32 × 287,648.80
  4. Step 4: Simplify right side
    529,363.32x = 210,133,868,721.22
  5. Step 5: Solve for x
    x = 210,133,868,721.22/529,363.32
  6. Step 6: Final answer
    x = 396,955.85

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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.