Home / 767,744.76-1,059,489.20-428,234.88

Finding the Fourth Proportional to 767,744.76, 1,059,489.20 and 428,234.88

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Solution

The fourth proportional to 767,744.76, 1,059,489.20 and 428,234.88 is: 590,964.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    767,744.76 : 1,059,489.20 = 428,234.88 : x
  2. Step 2: Convert to fraction form
    767,744.76/1,059,489.20 = 428,234.88/x
  3. Step 3: Cross multiply
    767,744.76x = 1,059,489.20 × 428,234.88
  4. Step 4: Simplify right side
    767,744.76x = 453,710,230,423.30
  5. Step 5: Solve for x
    x = 453,710,230,423.30/767,744.76
  6. Step 6: Final answer
    x = 590,964.93

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Half scale
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.