Home / 527,915.30-791,864.71-128,555.39

Finding the Fourth Proportional to 527,915.30, 791,864.71 and 128,555.39

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Solution

The fourth proportional to 527,915.30, 791,864.71 and 128,555.39 is: 192,831.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,915.30 : 791,864.71 = 128,555.39 : x
  2. Step 2: Convert to fraction form
    527,915.30/791,864.71 = 128,555.39/x
  3. Step 3: Cross multiply
    527,915.30x = 791,864.71 × 128,555.39
  4. Step 4: Simplify right side
    527,915.30x = 101,798,478,279.56
  5. Step 5: Solve for x
    x = 101,798,478,279.56/527,915.30
  6. Step 6: Final answer
    x = 192,831.08

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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.