Home / 869,439.30-1,304,158.95-363,912.90

Finding the Fourth Proportional to 869,439.30, 1,304,158.95 and 363,912.90

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Solution

The fourth proportional to 869,439.30, 1,304,158.95 and 363,912.90 is: 545,869.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,439.30 : 1,304,158.95 = 363,912.90 : x
  2. Step 2: Convert to fraction form
    869,439.30/1,304,158.95 = 363,912.90/x
  3. Step 3: Cross multiply
    869,439.30x = 1,304,158.95 × 363,912.90
  4. Step 4: Simplify right side
    869,439.30x = 474,600,265,555.46
  5. Step 5: Solve for x
    x = 474,600,265,555.46/869,439.30
  6. Step 6: Final answer
    x = 545,869.35

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Double scale
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Similar ratio
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1.5x scale

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.