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Finding the Fourth Proportional to 663,867.80, 994,613.70 and 403,731.80

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Solution

The fourth proportional to 663,867.80, 994,613.70 and 403,731.80 is: 604,875.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,867.80 : 994,613.70 = 403,731.80 : x
  2. Step 2: Convert to fraction form
    663,867.80/994,613.70 = 403,731.80/x
  3. Step 3: Cross multiply
    663,867.80x = 994,613.70 × 403,731.80
  4. Step 4: Simplify right side
    663,867.80x = 401,557,179,405.66
  5. Step 5: Solve for x
    x = 401,557,179,405.66/663,867.80
  6. Step 6: Final answer
    x = 604,875.22

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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.