Home / 861,207.40-1,288,651.67-718,700.89

Finding the Fourth Proportional to 861,207.40, 1,288,651.67 and 718,700.89

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Solution

The fourth proportional to 861,207.40, 1,288,651.67 and 718,700.89 is: 1,075,414.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,207.40 : 1,288,651.67 = 718,700.89 : x
  2. Step 2: Convert to fraction form
    861,207.40/1,288,651.67 = 718,700.89/x
  3. Step 3: Cross multiply
    861,207.40x = 1,288,651.67 × 718,700.89
  4. Step 4: Simplify right side
    861,207.40x = 926,155,102,128.99
  5. Step 5: Solve for x
    x = 926,155,102,128.99/861,207.40
  6. Step 6: Final answer
    x = 1,075,414.71

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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.