Home / 784,920.60-1,177,380.90-280,051.65

Finding the Fourth Proportional to 784,920.60, 1,177,380.90 and 280,051.65

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Solution

The fourth proportional to 784,920.60, 1,177,380.90 and 280,051.65 is: 420,077.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    784,920.60 : 1,177,380.90 = 280,051.65 : x
  2. Step 2: Convert to fraction form
    784,920.60/1,177,380.90 = 280,051.65/x
  3. Step 3: Cross multiply
    784,920.60x = 1,177,380.90 × 280,051.65
  4. Step 4: Simplify right side
    784,920.60x = 329,727,463,723.49
  5. Step 5: Solve for x
    x = 329,727,463,723.49/784,920.60
  6. Step 6: Final answer
    x = 420,077.48

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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.