Home / 766,281.80-1,149,422.70-299,337.80

Finding the Fourth Proportional to 766,281.80, 1,149,422.70 and 299,337.80

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Solution

The fourth proportional to 766,281.80, 1,149,422.70 and 299,337.80 is: 449,006.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,281.80 : 1,149,422.70 = 299,337.80 : x
  2. Step 2: Convert to fraction form
    766,281.80/1,149,422.70 = 299,337.80/x
  3. Step 3: Cross multiply
    766,281.80x = 1,149,422.70 × 299,337.80
  4. Step 4: Simplify right side
    766,281.80x = 344,065,662,288.06
  5. Step 5: Solve for x
    x = 344,065,662,288.06/766,281.80
  6. Step 6: Final answer
    x = 449,006.70

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