Home / 458,526.20-687,820.90-192,018.38

Finding the Fourth Proportional to 458,526.20, 687,820.90 and 192,018.38

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Solution

The fourth proportional to 458,526.20, 687,820.90 and 192,018.38 is: 288,040.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,526.20 : 687,820.90 = 192,018.38 : x
  2. Step 2: Convert to fraction form
    458,526.20/687,820.90 = 192,018.38/x
  3. Step 3: Cross multiply
    458,526.20x = 687,820.90 × 192,018.38
  4. Step 4: Simplify right side
    458,526.20x = 132,074,251,028.99
  5. Step 5: Solve for x
    x = 132,074,251,028.99/458,526.20
  6. Step 6: Final answer
    x = 288,040.80

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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.