Home / 457,935.66-686,825.73-120,979.98

Finding the Fourth Proportional to 457,935.66, 686,825.73 and 120,979.98

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Solution

The fourth proportional to 457,935.66, 686,825.73 and 120,979.98 is: 181,449.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,935.66 : 686,825.73 = 120,979.98 : x
  2. Step 2: Convert to fraction form
    457,935.66/686,825.73 = 120,979.98/x
  3. Step 3: Cross multiply
    457,935.66x = 686,825.73 × 120,979.98
  4. Step 4: Simplify right side
    457,935.66x = 83,092,163,078.89
  5. Step 5: Solve for x
    x = 83,092,163,078.89/457,935.66
  6. Step 6: Final answer
    x = 181,449.43

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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.