Home / 527,798.40-791,690.76-128,439.42

Finding the Fourth Proportional to 527,798.40, 791,690.76 and 128,439.42

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Solution

The fourth proportional to 527,798.40, 791,690.76 and 128,439.42 is: 192,657.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,798.40 : 791,690.76 = 128,439.42 : x
  2. Step 2: Convert to fraction form
    527,798.40/791,690.76 = 128,439.42/x
  3. Step 3: Cross multiply
    527,798.40x = 791,690.76 × 128,439.42
  4. Step 4: Simplify right side
    527,798.40x = 101,684,302,033.76
  5. Step 5: Solve for x
    x = 101,684,302,033.76/527,798.40
  6. Step 6: Final answer
    x = 192,657.47

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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.