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Finding the Fourth Proportional to 663,029.56, 914,980.89 and 361,223.56

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Solution

The fourth proportional to 663,029.56, 914,980.89 and 361,223.56 is: 498,488.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,029.56 : 914,980.89 = 361,223.56 : x
  2. Step 2: Convert to fraction form
    663,029.56/914,980.89 = 361,223.56/x
  3. Step 3: Cross multiply
    663,029.56x = 914,980.89 × 361,223.56
  4. Step 4: Simplify right side
    663,029.56x = 330,512,654,417.77
  5. Step 5: Solve for x
    x = 330,512,654,417.77/663,029.56
  6. Step 6: Final answer
    x = 498,488.57

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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.