Home / 687,629.77-1,032,123.47-516,255.42

Finding the Fourth Proportional to 687,629.77, 1,032,123.47 and 516,255.42

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Solution

The fourth proportional to 687,629.77, 1,032,123.47 and 516,255.42 is: 774,892.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,629.77 : 1,032,123.47 = 516,255.42 : x
  2. Step 2: Convert to fraction form
    687,629.77/1,032,123.47 = 516,255.42/x
  3. Step 3: Cross multiply
    687,629.77x = 1,032,123.47 × 516,255.42
  4. Step 4: Simplify right side
    687,629.77x = 532,839,336,785.89
  5. Step 5: Solve for x
    x = 532,839,336,785.89/687,629.77
  6. Step 6: Final answer
    x = 774,892.77

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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.