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Finding the Fourth Proportional to 663,862.80, 994,606.20 and 403,726.80

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Solution

The fourth proportional to 663,862.80, 994,606.20 and 403,726.80 is: 604,867.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,862.80 : 994,606.20 = 403,726.80 : x
  2. Step 2: Convert to fraction form
    663,862.80/994,606.20 = 403,726.80/x
  3. Step 3: Cross multiply
    663,862.80x = 994,606.20 × 403,726.80
  4. Step 4: Simplify right side
    663,862.80x = 401,549,178,386.16
  5. Step 5: Solve for x
    x = 401,549,178,386.16/663,862.80
  6. Step 6: Final answer
    x = 604,867.72

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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.