Home / 766,280.80-1,149,421.20-299,336.80

Finding the Fourth Proportional to 766,280.80, 1,149,421.20 and 299,336.80

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Solution

The fourth proportional to 766,280.80, 1,149,421.20 and 299,336.80 is: 449,005.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,280.80 : 1,149,421.20 = 299,336.80 : x
  2. Step 2: Convert to fraction form
    766,280.80/1,149,421.20 = 299,336.80/x
  3. Step 3: Cross multiply
    766,280.80x = 1,149,421.20 × 299,336.80
  4. Step 4: Simplify right side
    766,280.80x = 344,064,063,860.16
  5. Step 5: Solve for x
    x = 344,064,063,860.16/766,280.80
  6. Step 6: Final answer
    x = 449,005.20

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Half scale
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Double scale
Find fourth proportional to 766,281.80, 1,149,422.70 and 299,337.80
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.