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Finding the Fourth Proportional to 8,257,390.53, 12,386,085.78 and 8,257,390.53

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Solution

The fourth proportional to 8,257,390.53, 12,386,085.78 and 8,257,390.53 is: 12,386,085.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,257,390.53 : 12,386,085.78 = 8,257,390.53 : x
  2. Step 2: Convert to fraction form
    8,257,390.53/12,386,085.78 = 8,257,390.53/x
  3. Step 3: Cross multiply
    8,257,390.53x = 12,386,085.78 × 8,257,390.53
  4. Step 4: Simplify right side
    8,257,390.53x = 102,276,747,423,539.66
  5. Step 5: Solve for x
    x = 102,276,747,423,539.66/8,257,390.53
  6. Step 6: Final answer
    x = 12,386,085.78

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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.