Home / 639,839.86-959,021.58-240,225.76

Finding the Fourth Proportional to 639,839.86, 959,021.58 and 240,225.76

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Solution

The fourth proportional to 639,839.86, 959,021.58 and 240,225.76 is: 360,061.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,839.86 : 959,021.58 = 240,225.76 : x
  2. Step 2: Convert to fraction form
    639,839.86/959,021.58 = 240,225.76/x
  3. Step 3: Cross multiply
    639,839.86x = 959,021.58 × 240,225.76
  4. Step 4: Simplify right side
    639,839.86x = 230,381,687,911.90
  5. Step 5: Solve for x
    x = 230,381,687,911.90/639,839.86
  6. Step 6: Final answer
    x = 360,061.48

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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.