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Finding the Fourth Proportional to 625,253.79, 862,374.22 and 538,187.07

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Solution

The fourth proportional to 625,253.79, 862,374.22 and 538,187.07 is: 742,288.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,253.79 : 862,374.22 = 538,187.07 : x
  2. Step 2: Convert to fraction form
    625,253.79/862,374.22 = 538,187.07/x
  3. Step 3: Cross multiply
    625,253.79x = 862,374.22 × 538,187.07
  4. Step 4: Simplify right side
    625,253.79x = 464,118,654,705.34
  5. Step 5: Solve for x
    x = 464,118,654,705.34/625,253.79
  6. Step 6: Final answer
    x = 742,288.43

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1.5x scale

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.