Home / 527,831.12-791,735.55-128,474.12

Finding the Fourth Proportional to 527,831.12, 791,735.55 and 128,474.12

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Solution

The fourth proportional to 527,831.12, 791,735.55 and 128,474.12 is: 192,708.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,831.12 : 791,735.55 = 128,474.12 : x
  2. Step 2: Convert to fraction form
    527,831.12/791,735.55 = 128,474.12/x
  3. Step 3: Cross multiply
    527,831.12x = 791,735.55 × 128,474.12
  4. Step 4: Simplify right side
    527,831.12x = 101,717,528,058.97
  5. Step 5: Solve for x
    x = 101,717,528,058.97/527,831.12
  6. Step 6: Final answer
    x = 192,708.47

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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.