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Finding the Fourth Proportional to 649,536.61, 896,355 and 359,155.66

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Solution

The fourth proportional to 649,536.61, 896,355 and 359,155.66 is: 495,631.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,536.61 : 896,355 = 359,155.66 : x
  2. Step 2: Convert to fraction form
    649,536.61/896,355 = 359,155.66/x
  3. Step 3: Cross multiply
    649,536.61x = 896,355 × 359,155.66
  4. Step 4: Simplify right side
    649,536.61x = 321,930,971,619.30
  5. Step 5: Solve for x
    x = 321,930,971,619.30/649,536.61
  6. Step 6: Final answer
    x = 495,631.76

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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.