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Finding the Fourth Proportional to 649,388.30, 896,078.24 and 358,960.63

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Solution

The fourth proportional to 649,388.30, 896,078.24 and 358,960.63 is: 495,322.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,388.30 : 896,078.24 = 358,960.63 : x
  2. Step 2: Convert to fraction form
    649,388.30/896,078.24 = 358,960.63/x
  3. Step 3: Cross multiply
    649,388.30x = 896,078.24 × 358,960.63
  4. Step 4: Simplify right side
    649,388.30x = 321,656,805,524.69
  5. Step 5: Solve for x
    x = 321,656,805,524.69/649,388.30
  6. Step 6: Final answer
    x = 495,322.76

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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.