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Finding the Fourth Proportional to 528,691.26, 729,594.50 and 286,973.79

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Solution

The fourth proportional to 528,691.26, 729,594.50 and 286,973.79 is: 396,024.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,691.26 : 729,594.50 = 286,973.79 : x
  2. Step 2: Convert to fraction form
    528,691.26/729,594.50 = 286,973.79/x
  3. Step 3: Cross multiply
    528,691.26x = 729,594.50 × 286,973.79
  4. Step 4: Simplify right side
    528,691.26x = 209,374,498,828.16
  5. Step 5: Solve for x
    x = 209,374,498,828.16/528,691.26
  6. Step 6: Final answer
    x = 396,024.13

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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.