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Finding the Fourth Proportional to 656,645.30, 984,967.95 and 445,138.10

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Solution

The fourth proportional to 656,645.30, 984,967.95 and 445,138.10 is: 667,707.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,645.30 : 984,967.95 = 445,138.10 : x
  2. Step 2: Convert to fraction form
    656,645.30/984,967.95 = 445,138.10/x
  3. Step 3: Cross multiply
    656,645.30x = 984,967.95 × 445,138.10
  4. Step 4: Simplify right side
    656,645.30x = 438,446,761,823.90
  5. Step 5: Solve for x
    x = 438,446,761,823.90/656,645.30
  6. Step 6: Final answer
    x = 667,707.15

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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.