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Finding the Fourth Proportional to 490,382.40, 676,480.92 and 425,763.74

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Solution

The fourth proportional to 490,382.40, 676,480.92 and 425,763.74 is: 587,339.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,382.40 : 676,480.92 = 425,763.74 : x
  2. Step 2: Convert to fraction form
    490,382.40/676,480.92 = 425,763.74/x
  3. Step 3: Cross multiply
    490,382.40x = 676,480.92 × 425,763.74
  4. Step 4: Simplify right side
    490,382.40x = 288,021,046,632.43
  5. Step 5: Solve for x
    x = 288,021,046,632.43/490,382.40
  6. Step 6: Final answer
    x = 587,339.69

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1.5x scale

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.