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Finding the Fourth Proportional to 649,448.72, 896,200.62 and 359,042.90

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Solution

The fourth proportional to 649,448.72, 896,200.62 and 359,042.90 is: 495,457.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,448.72 : 896,200.62 = 359,042.90 : x
  2. Step 2: Convert to fraction form
    649,448.72/896,200.62 = 359,042.90/x
  3. Step 3: Cross multiply
    649,448.72x = 896,200.62 × 359,042.90
  4. Step 4: Simplify right side
    649,448.72x = 321,774,465,105.60
  5. Step 5: Solve for x
    x = 321,774,465,105.60/649,448.72
  6. Step 6: Final answer
    x = 495,457.85

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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.