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Finding the Fourth Proportional to 490,310.61, 675,064.49 and 418,402.05

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Solution

The fourth proportional to 490,310.61, 675,064.49 and 418,402.05 is: 576,060.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,310.61 : 675,064.49 = 418,402.05 : x
  2. Step 2: Convert to fraction form
    490,310.61/675,064.49 = 418,402.05/x
  3. Step 3: Cross multiply
    490,310.61x = 675,064.49 × 418,402.05
  4. Step 4: Simplify right side
    490,310.61x = 282,448,366,498.20
  5. Step 5: Solve for x
    x = 282,448,366,498.20/490,310.61
  6. Step 6: Final answer
    x = 576,060.07

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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.