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Finding the Fourth Proportional to 868,288.66, 1,301,737.53 and 412,651.21

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Solution

The fourth proportional to 868,288.66, 1,301,737.53 and 412,651.21 is: 618,646.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,288.66 : 1,301,737.53 = 412,651.21 : x
  2. Step 2: Convert to fraction form
    868,288.66/1,301,737.53 = 412,651.21/x
  3. Step 3: Cross multiply
    868,288.66x = 1,301,737.53 × 412,651.21
  4. Step 4: Simplify right side
    868,288.66x = 537,163,560,348.22
  5. Step 5: Solve for x
    x = 537,163,560,348.22/868,288.66
  6. Step 6: Final answer
    x = 618,646.30

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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.