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Finding the Fourth Proportional to 639,752.28, 959,763.74 and 240,396.52

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Solution

The fourth proportional to 639,752.28, 959,763.74 and 240,396.52 is: 360,645.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,752.28 : 959,763.74 = 240,396.52 : x
  2. Step 2: Convert to fraction form
    639,752.28/959,763.74 = 240,396.52/x
  3. Step 3: Cross multiply
    639,752.28x = 959,763.74 × 240,396.52
  4. Step 4: Simplify right side
    639,752.28x = 230,723,863,118.19
  5. Step 5: Solve for x
    x = 230,723,863,118.19/639,752.28
  6. Step 6: Final answer
    x = 360,645.63

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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.