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Finding the Fourth Proportional to 663,448.74, 915,559.29 and 361,642.74

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Solution

The fourth proportional to 663,448.74, 915,559.29 and 361,642.74 is: 499,067.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,448.74 : 915,559.29 = 361,642.74 : x
  2. Step 2: Convert to fraction form
    663,448.74/915,559.29 = 361,642.74/x
  3. Step 3: Cross multiply
    663,448.74x = 915,559.29 × 361,642.74
  4. Step 4: Simplify right side
    663,448.74x = 331,105,370,268.06
  5. Step 5: Solve for x
    x = 331,105,370,268.06/663,448.74
  6. Step 6: Final answer
    x = 499,067.00

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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.