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Finding the Fourth Proportional to 490,135.68, 676,336.32 and 328,957.92

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Solution

The fourth proportional to 490,135.68, 676,336.32 and 328,957.92 is: 453,927.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,135.68 : 676,336.32 = 328,957.92 : x
  2. Step 2: Convert to fraction form
    490,135.68/676,336.32 = 328,957.92/x
  3. Step 3: Cross multiply
    490,135.68x = 676,336.32 × 328,957.92
  4. Step 4: Simplify right side
    490,135.68x = 222,486,189,047.65
  5. Step 5: Solve for x
    x = 222,486,189,047.65/490,135.68
  6. Step 6: Final answer
    x = 453,927.76

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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.