Home / 869,489.40-1,304,234.10-449,585.40

Finding the Fourth Proportional to 869,489.40, 1,304,234.10 and 449,585.40

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Solution

The fourth proportional to 869,489.40, 1,304,234.10 and 449,585.40 is: 674,378.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,489.40 : 1,304,234.10 = 449,585.40 : x
  2. Step 2: Convert to fraction form
    869,489.40/1,304,234.10 = 449,585.40/x
  3. Step 3: Cross multiply
    869,489.40x = 1,304,234.10 × 449,585.40
  4. Step 4: Simplify right side
    869,489.40x = 586,364,609,542.14
  5. Step 5: Solve for x
    x = 586,364,609,542.14/869,489.40
  6. Step 6: Final answer
    x = 674,378.10

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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.