Home / 498,423.57-687,815.73-283,559.04

Finding the Fourth Proportional to 498,423.57, 687,815.73 and 283,559.04

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Solution

The fourth proportional to 498,423.57, 687,815.73 and 283,559.04 is: 391,306.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,423.57 : 687,815.73 = 283,559.04 : x
  2. Step 2: Convert to fraction form
    498,423.57/687,815.73 = 283,559.04/x
  3. Step 3: Cross multiply
    498,423.57x = 687,815.73 × 283,559.04
  4. Step 4: Simplify right side
    498,423.57x = 195,036,368,095.70
  5. Step 5: Solve for x
    x = 195,036,368,095.70/498,423.57
  6. Step 6: Final answer
    x = 391,306.47

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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.