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Finding the Fourth Proportional to 567,143.28, 782,712.88 and 423,654.21

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Solution

The fourth proportional to 567,143.28, 782,712.88 and 423,654.21 is: 584,684.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,143.28 : 782,712.88 = 423,654.21 : x
  2. Step 2: Convert to fraction form
    567,143.28/782,712.88 = 423,654.21/x
  3. Step 3: Cross multiply
    567,143.28x = 782,712.88 × 423,654.21
  4. Step 4: Simplify right side
    567,143.28x = 331,599,606,833.23
  5. Step 5: Solve for x
    x = 331,599,606,833.23/567,143.28
  6. Step 6: Final answer
    x = 584,684.01

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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.