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Finding the Fourth Proportional to 663,266.74, 915,308.13 and 361,460.50

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Solution

The fourth proportional to 663,266.74, 915,308.13 and 361,460.50 is: 498,815.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,266.74 : 915,308.13 = 361,460.50 : x
  2. Step 2: Convert to fraction form
    663,266.74/915,308.13 = 361,460.50/x
  3. Step 3: Cross multiply
    663,266.74x = 915,308.13 × 361,460.50
  4. Step 4: Simplify right side
    663,266.74x = 330,847,734,323.87
  5. Step 5: Solve for x
    x = 330,847,734,323.87/663,266.74
  6. Step 6: Final answer
    x = 498,815.51

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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.