Home / 658,195.05-908,406.12-386,412.85

Finding the Fourth Proportional to 658,195.05, 908,406.12 and 386,412.85

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Solution

The fourth proportional to 658,195.05, 908,406.12 and 386,412.85 is: 533,306.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,195.05 : 908,406.12 = 386,412.85 : x
  2. Step 2: Convert to fraction form
    658,195.05/908,406.12 = 386,412.85/x
  3. Step 3: Cross multiply
    658,195.05x = 908,406.12 × 386,412.85
  4. Step 4: Simplify right side
    658,195.05x = 351,019,797,786.64
  5. Step 5: Solve for x
    x = 351,019,797,786.64/658,195.05
  6. Step 6: Final answer
    x = 533,306.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.