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Finding the Fourth Proportional to 528,691.50, 729,594.84 and 286,974.04

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Solution

The fourth proportional to 528,691.50, 729,594.84 and 286,974.04 is: 396,024.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,691.50 : 729,594.84 = 286,974.04 : x
  2. Step 2: Convert to fraction form
    528,691.50/729,594.84 = 286,974.04/x
  3. Step 3: Cross multiply
    528,691.50x = 729,594.84 × 286,974.04
  4. Step 4: Simplify right side
    528,691.50x = 209,374,778,797.95
  5. Step 5: Solve for x
    x = 209,374,778,797.95/528,691.50
  6. Step 6: Final answer
    x = 396,024.48

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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.