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Finding the Fourth Proportional to 663,293.20, 915,341.16 and 361,484.56

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Solution

The fourth proportional to 663,293.20, 915,341.16 and 361,484.56 is: 498,846.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,293.20 : 915,341.16 = 361,484.56 : x
  2. Step 2: Convert to fraction form
    663,293.20/915,341.16 = 361,484.56/x
  3. Step 3: Cross multiply
    663,293.20x = 915,341.16 × 361,484.56
  4. Step 4: Simplify right side
    663,293.20x = 330,881,696,472.49
  5. Step 5: Solve for x
    x = 330,881,696,472.49/663,293.20
  6. Step 6: Final answer
    x = 498,846.81

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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.