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Finding the Fourth Proportional to 966,101.80, 1,449,411.90 and 861,644.20

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Solution

The fourth proportional to 966,101.80, 1,449,411.90 and 861,644.20 is: 1,292,697.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    966,101.80 : 1,449,411.90 = 861,644.20 : x
  2. Step 2: Convert to fraction form
    966,101.80/1,449,411.90 = 861,644.20/x
  3. Step 3: Cross multiply
    966,101.80x = 1,449,411.90 × 861,644.20
  4. Step 4: Simplify right side
    966,101.80x = 1,248,877,357,045.98
  5. Step 5: Solve for x
    x = 1,248,877,357,045.98/966,101.80
  6. Step 6: Final answer
    x = 1,292,697.47

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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.