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Finding the Fourth Proportional to 480,799.98, 663,641.91 and 317,575.80

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Solution

The fourth proportional to 480,799.98, 663,641.91 and 317,575.80 is: 438,345.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,799.98 : 663,641.91 = 317,575.80 : x
  2. Step 2: Convert to fraction form
    480,799.98/663,641.91 = 317,575.80/x
  3. Step 3: Cross multiply
    480,799.98x = 663,641.91 × 317,575.80
  4. Step 4: Simplify right side
    480,799.98x = 210,756,610,481.78
  5. Step 5: Solve for x
    x = 210,756,610,481.78/480,799.98
  6. Step 6: Final answer
    x = 438,345.71

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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.