Home / 527,818.90-791,721.66-128,460.55

Finding the Fourth Proportional to 527,818.90, 791,721.66 and 128,460.55

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Solution

The fourth proportional to 527,818.90, 791,721.66 and 128,460.55 is: 192,689.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,818.90 : 791,721.66 = 128,460.55 : x
  2. Step 2: Convert to fraction form
    527,818.90/791,721.66 = 128,460.55/x
  3. Step 3: Cross multiply
    527,818.90x = 791,721.66 × 128,460.55
  4. Step 4: Simplify right side
    527,818.90x = 101,704,999,890.51
  5. Step 5: Solve for x
    x = 101,704,999,890.51/527,818.90
  6. Step 6: Final answer
    x = 192,689.20

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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.