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Finding the Fourth Proportional to 487,423.96, 671,149.74 and 426,654.52

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Solution

The fourth proportional to 487,423.96, 671,149.74 and 426,654.52 is: 587,474.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,423.96 : 671,149.74 = 426,654.52 : x
  2. Step 2: Convert to fraction form
    487,423.96/671,149.74 = 426,654.52/x
  3. Step 3: Cross multiply
    487,423.96x = 671,149.74 × 426,654.52
  4. Step 4: Simplify right side
    487,423.96x = 286,349,070,167.83
  5. Step 5: Solve for x
    x = 286,349,070,167.83/487,423.96
  6. Step 6: Final answer
    x = 587,474.34

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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.