Home / 457,545.36-686,308.32-125,121.36

Finding the Fourth Proportional to 457,545.36, 686,308.32 and 125,121.36

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Solution

The fourth proportional to 457,545.36, 686,308.32 and 125,121.36 is: 187,679.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,545.36 : 686,308.32 = 125,121.36 : x
  2. Step 2: Convert to fraction form
    457,545.36/686,308.32 = 125,121.36/x
  3. Step 3: Cross multiply
    457,545.36x = 686,308.32 × 125,121.36
  4. Step 4: Simplify right side
    457,545.36x = 85,871,830,377.72
  5. Step 5: Solve for x
    x = 85,871,830,377.72/457,545.36
  6. Step 6: Final answer
    x = 187,679.38

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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.