Home / 758,465.10-1,138,135.05-285,489.90

Finding the Fourth Proportional to 758,465.10, 1,138,135.05 and 285,489.90

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Solution

The fourth proportional to 758,465.10, 1,138,135.05 and 285,489.90 is: 428,399.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    758,465.10 : 1,138,135.05 = 285,489.90 : x
  2. Step 2: Convert to fraction form
    758,465.10/1,138,135.05 = 285,489.90/x
  3. Step 3: Cross multiply
    758,465.10x = 1,138,135.05 × 285,489.90
  4. Step 4: Simplify right side
    758,465.10x = 324,926,061,611.00
  5. Step 5: Solve for x
    x = 324,926,061,611.00/758,465.10
  6. Step 6: Final answer
    x = 428,399.49

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Double scale
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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.