Home / 674,584.62-1,011,588.90-390,471.31

Finding the Fourth Proportional to 674,584.62, 1,011,588.90 and 390,471.31

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Solution

The fourth proportional to 674,584.62, 1,011,588.90 and 390,471.31 is: 585,540.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,584.62 : 1,011,588.90 = 390,471.31 : x
  2. Step 2: Convert to fraction form
    674,584.62/1,011,588.90 = 390,471.31/x
  3. Step 3: Cross multiply
    674,584.62x = 1,011,588.90 × 390,471.31
  4. Step 4: Simplify right side
    674,584.62x = 394,996,442,964.46
  5. Step 5: Solve for x
    x = 394,996,442,964.46/674,584.62
  6. Step 6: Final answer
    x = 585,540.24

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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.