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Finding the Fourth Proportional to 523,330.60, 783,959.10 and 486,005.80

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Solution

The fourth proportional to 523,330.60, 783,959.10 and 486,005.80 is: 728,045.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    523,330.60 : 783,959.10 = 486,005.80 : x
  2. Step 2: Convert to fraction form
    523,330.60/783,959.10 = 486,005.80/x
  3. Step 3: Cross multiply
    523,330.60x = 783,959.10 × 486,005.80
  4. Step 4: Simplify right side
    523,330.60x = 381,008,669,562.78
  5. Step 5: Solve for x
    x = 381,008,669,562.78/523,330.60
  6. Step 6: Final answer
    x = 728,045.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.