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Finding the Fourth Proportional to 586,661.40, 878,679.90 and 481,685.40

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Solution

The fourth proportional to 586,661.40, 878,679.90 and 481,685.40 is: 721,450.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,661.40 : 878,679.90 = 481,685.40 : x
  2. Step 2: Convert to fraction form
    586,661.40/878,679.90 = 481,685.40/x
  3. Step 3: Cross multiply
    586,661.40x = 878,679.90 × 481,685.40
  4. Step 4: Simplify right side
    586,661.40x = 423,247,279,103.46
  5. Step 5: Solve for x
    x = 423,247,279,103.46/586,661.40
  6. Step 6: Final answer
    x = 721,450.70

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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.