Home / 658,123.20-986,407.20-279,043.20

Finding the Fourth Proportional to 658,123.20, 986,407.20 and 279,043.20

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Solution

The fourth proportional to 658,123.20, 986,407.20 and 279,043.20 is: 418,235.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,123.20 : 986,407.20 = 279,043.20 : x
  2. Step 2: Convert to fraction form
    658,123.20/986,407.20 = 279,043.20/x
  3. Step 3: Cross multiply
    658,123.20x = 986,407.20 × 279,043.20
  4. Step 4: Simplify right side
    658,123.20x = 275,250,221,591.04
  5. Step 5: Solve for x
    x = 275,250,221,591.04/658,123.20
  6. Step 6: Final answer
    x = 418,235.10

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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.