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Finding the Fourth Proportional to 663,260, 915,305.28 and 361,460.48

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Solution

The fourth proportional to 663,260, 915,305.28 and 361,460.48 is: 498,818.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,260 : 915,305.28 = 361,460.48 : x
  2. Step 2: Convert to fraction form
    663,260/915,305.28 = 361,460.48/x
  3. Step 3: Cross multiply
    663,260x = 915,305.28 × 361,460.48
  4. Step 4: Simplify right side
    663,260x = 330,846,685,855.33
  5. Step 5: Solve for x
    x = 330,846,685,855.33/663,260
  6. Step 6: Final answer
    x = 498,818.99

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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.