Home / 691,057.60-1,036,731.84-391,681.60

Finding the Fourth Proportional to 691,057.60, 1,036,731.84 and 391,681.60

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Solution

The fourth proportional to 691,057.60, 1,036,731.84 and 391,681.60 is: 587,604.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,057.60 : 1,036,731.84 = 391,681.60 : x
  2. Step 2: Convert to fraction form
    691,057.60/1,036,731.84 = 391,681.60/x
  3. Step 3: Cross multiply
    691,057.60x = 1,036,731.84 × 391,681.60
  4. Step 4: Simplify right side
    691,057.60x = 406,068,785,862.14
  5. Step 5: Solve for x
    x = 406,068,785,862.14/691,057.60
  6. Step 6: Final answer
    x = 587,604.83

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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.