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Finding the Fourth Proportional to 590,687.40, 884,718.90 and 485,711.40

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Solution

The fourth proportional to 590,687.40, 884,718.90 and 485,711.40 is: 727,488.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    590,687.40 : 884,718.90 = 485,711.40 : x
  2. Step 2: Convert to fraction form
    590,687.40/884,718.90 = 485,711.40/x
  3. Step 3: Cross multiply
    590,687.40x = 884,718.90 × 485,711.40
  4. Step 4: Simplify right side
    590,687.40x = 429,718,055,525.46
  5. Step 5: Solve for x
    x = 429,718,055,525.46/590,687.40
  6. Step 6: Final answer
    x = 727,488.10

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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.