Home / 691,101.47-1,036,793.15-391,715.75

Finding the Fourth Proportional to 691,101.47, 1,036,793.15 and 391,715.75

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Solution

The fourth proportional to 691,101.47, 1,036,793.15 and 391,715.75 is: 587,653.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,101.47 : 1,036,793.15 = 391,715.75 : x
  2. Step 2: Convert to fraction form
    691,101.47/1,036,793.15 = 391,715.75/x
  3. Step 3: Cross multiply
    691,101.47x = 1,036,793.15 × 391,715.75
  4. Step 4: Simplify right side
    691,101.47x = 406,128,199,204.57
  5. Step 5: Solve for x
    x = 406,128,199,204.57/691,101.47
  6. Step 6: Final answer
    x = 587,653.51

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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.