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Finding the Fourth Proportional to 887,069.94, 1,224,157 and 479,171.78

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Solution

The fourth proportional to 887,069.94, 1,224,157 and 479,171.78 is: 661,257.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,069.94 : 1,224,157 = 479,171.78 : x
  2. Step 2: Convert to fraction form
    887,069.94/1,224,157 = 479,171.78/x
  3. Step 3: Cross multiply
    887,069.94x = 1,224,157 × 479,171.78
  4. Step 4: Simplify right side
    887,069.94x = 586,581,488,689.46
  5. Step 5: Solve for x
    x = 586,581,488,689.46/887,069.94
  6. Step 6: Final answer
    x = 661,257.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.