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Finding the Fourth Proportional to 528,763.34, 729,694.28 and 287,046.04

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Solution

The fourth proportional to 528,763.34, 729,694.28 and 287,046.04 is: 396,124.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,763.34 : 729,694.28 = 287,046.04 : x
  2. Step 2: Convert to fraction form
    528,763.34/729,694.28 = 287,046.04/x
  3. Step 3: Cross multiply
    528,763.34x = 729,694.28 × 287,046.04
  4. Step 4: Simplify right side
    528,763.34x = 209,455,853,484.65
  5. Step 5: Solve for x
    x = 209,455,853,484.65/528,763.34
  6. Step 6: Final answer
    x = 396,124.01

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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.