Home / 485,419.38-669,867.33-281,506.74

Finding the Fourth Proportional to 485,419.38, 669,867.33 and 281,506.74

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Solution

The fourth proportional to 485,419.38, 669,867.33 and 281,506.74 is: 388,472.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,419.38 : 669,867.33 = 281,506.74 : x
  2. Step 2: Convert to fraction form
    485,419.38/669,867.33 = 281,506.74/x
  3. Step 3: Cross multiply
    485,419.38x = 669,867.33 × 281,506.74
  4. Step 4: Simplify right side
    485,419.38x = 188,572,168,300.80
  5. Step 5: Solve for x
    x = 188,572,168,300.80/485,419.38
  6. Step 6: Final answer
    x = 388,472.68

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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.