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Finding the Fourth Proportional to 526,722.76, 726,875.40 and 285,005.80

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Solution

The fourth proportional to 526,722.76, 726,875.40 and 285,005.80 is: 393,306.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,722.76 : 726,875.40 = 285,005.80 : x
  2. Step 2: Convert to fraction form
    526,722.76/726,875.40 = 285,005.80/x
  3. Step 3: Cross multiply
    526,722.76x = 726,875.40 × 285,005.80
  4. Step 4: Simplify right side
    526,722.76x = 207,163,704,877.32
  5. Step 5: Solve for x
    x = 207,163,704,877.32/526,722.76
  6. Step 6: Final answer
    x = 393,306.92

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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.