Home / 612,890.52-919,335.78-192,199.20

Finding the Fourth Proportional to 612,890.52, 919,335.78 and 192,199.20

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Solution

The fourth proportional to 612,890.52, 919,335.78 and 192,199.20 is: 288,298.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,890.52 : 919,335.78 = 192,199.20 : x
  2. Step 2: Convert to fraction form
    612,890.52/919,335.78 = 192,199.20/x
  3. Step 3: Cross multiply
    612,890.52x = 919,335.78 × 192,199.20
  4. Step 4: Simplify right side
    612,890.52x = 176,695,601,447.38
  5. Step 5: Solve for x
    x = 176,695,601,447.38/612,890.52
  6. Step 6: Final answer
    x = 288,298.80

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Similar ratio
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1.5x scale

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.