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Finding the Fourth Proportional to 526,718.50, 726,869.19 and 285,005.35

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Solution

The fourth proportional to 526,718.50, 726,869.19 and 285,005.35 is: 393,306.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,718.50 : 726,869.19 = 285,005.35 : x
  2. Step 2: Convert to fraction form
    526,718.50/726,869.19 = 285,005.35/x
  3. Step 3: Cross multiply
    526,718.50x = 726,869.19 × 285,005.35
  4. Step 4: Simplify right side
    526,718.50x = 207,161,609,877.52
  5. Step 5: Solve for x
    x = 207,161,609,877.52/526,718.50
  6. Step 6: Final answer
    x = 393,306.12

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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.