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Finding the Fourth Proportional to 865,624.90, 1,298,437.36 and 865,624.90

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Solution

The fourth proportional to 865,624.90, 1,298,437.36 and 865,624.90 is: 1,298,437.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,624.90 : 1,298,437.36 = 865,624.90 : x
  2. Step 2: Convert to fraction form
    865,624.90/1,298,437.36 = 865,624.90/x
  3. Step 3: Cross multiply
    865,624.90x = 1,298,437.36 × 865,624.90
  4. Step 4: Simplify right side
    865,624.90x = 1,123,959,709,906.26
  5. Step 5: Solve for x
    x = 1,123,959,709,906.26/865,624.90
  6. Step 6: Final answer
    x = 1,298,437.36

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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.