Home / 931,149.90-1,284,891.12-523,186.92

Finding the Fourth Proportional to 931,149.90, 1,284,891.12 and 523,186.92

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Solution

The fourth proportional to 931,149.90, 1,284,891.12 and 523,186.92 is: 721,944.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    931,149.90 : 1,284,891.12 = 523,186.92 : x
  2. Step 2: Convert to fraction form
    931,149.90/1,284,891.12 = 523,186.92/x
  3. Step 3: Cross multiply
    931,149.90x = 1,284,891.12 × 523,186.92
  4. Step 4: Simplify right side
    931,149.90x = 672,238,227,608.15
  5. Step 5: Solve for x
    x = 672,238,227,608.15/931,149.90
  6. Step 6: Final answer
    x = 721,944.15

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Double scale
Find fourth proportional to 931,150.90, 1,284,892.50 and 523,187.92
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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.