Home / 457,388.31-686,083.95-115,831.55

Finding the Fourth Proportional to 457,388.31, 686,083.95 and 115,831.55

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Solution

The fourth proportional to 457,388.31, 686,083.95 and 115,831.55 is: 173,747.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,388.31 : 686,083.95 = 115,831.55 : x
  2. Step 2: Convert to fraction form
    457,388.31/686,083.95 = 115,831.55/x
  3. Step 3: Cross multiply
    457,388.31x = 686,083.95 × 115,831.55
  4. Step 4: Simplify right side
    457,388.31x = 79,470,163,928.20
  5. Step 5: Solve for x
    x = 79,470,163,928.20/457,388.31
  6. Step 6: Final answer
    x = 173,747.69

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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.