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Finding the Fourth Proportional to 866,875.60, 1,300,322.31 and 387,127.82

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Solution

The fourth proportional to 866,875.60, 1,300,322.31 and 387,127.82 is: 580,695.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,875.60 : 1,300,322.31 = 387,127.82 : x
  2. Step 2: Convert to fraction form
    866,875.60/1,300,322.31 = 387,127.82/x
  3. Step 3: Cross multiply
    866,875.60x = 1,300,322.31 × 387,127.82
  4. Step 4: Simplify right side
    866,875.60x = 503,390,939,658.60
  5. Step 5: Solve for x
    x = 503,390,939,658.60/866,875.60
  6. Step 6: Final answer
    x = 580,695.71

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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.