Home / 674,631.56-930,992.46-388,145.90

Finding the Fourth Proportional to 674,631.56, 930,992.46 and 388,145.90

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Solution

The fourth proportional to 674,631.56, 930,992.46 and 388,145.90 is: 535,641.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,631.56 : 930,992.46 = 388,145.90 : x
  2. Step 2: Convert to fraction form
    674,631.56/930,992.46 = 388,145.90/x
  3. Step 3: Cross multiply
    674,631.56x = 930,992.46 × 388,145.90
  4. Step 4: Simplify right side
    674,631.56x = 361,360,906,279.91
  5. Step 5: Solve for x
    x = 361,360,906,279.91/674,631.56
  6. Step 6: Final answer
    x = 535,641.86

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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.