Home / 690,775.30-1,036,162.95-192,139.30

Finding the Fourth Proportional to 690,775.30, 1,036,162.95 and 192,139.30

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Solution

The fourth proportional to 690,775.30, 1,036,162.95 and 192,139.30 is: 288,208.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,775.30 : 1,036,162.95 = 192,139.30 : x
  2. Step 2: Convert to fraction form
    690,775.30/1,036,162.95 = 192,139.30/x
  3. Step 3: Cross multiply
    690,775.30x = 1,036,162.95 × 192,139.30
  4. Step 4: Simplify right side
    690,775.30x = 199,087,623,898.94
  5. Step 5: Solve for x
    x = 199,087,623,898.94/690,775.30
  6. Step 6: Final answer
    x = 288,208.95

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Double scale
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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.