Home / 1,431,756.20-1,975,773.08-787,171.43

Finding the Fourth Proportional to 1,431,756.20, 1,975,773.08 and 787,171.43

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Solution

The fourth proportional to 1,431,756.20, 1,975,773.08 and 787,171.43 is: 1,086,268.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,431,756.20 : 1,975,773.08 = 787,171.43 : x
  2. Step 2: Convert to fraction form
    1,431,756.20/1,975,773.08 = 787,171.43/x
  3. Step 3: Cross multiply
    1,431,756.20x = 1,975,773.08 × 787,171.43
  4. Step 4: Simplify right side
    1,431,756.20x = 1,555,272,127,646.47
  5. Step 5: Solve for x
    x = 1,555,272,127,646.47/1,431,756.20
  6. Step 6: Final answer
    x = 1,086,268.82

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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.