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Finding the Fourth Proportional to 649,445.72, 896,196.49 and 359,039.89

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Solution

The fourth proportional to 649,445.72, 896,196.49 and 359,039.89 is: 495,453.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,445.72 : 896,196.49 = 359,039.89 : x
  2. Step 2: Convert to fraction form
    649,445.72/896,196.49 = 359,039.89/x
  3. Step 3: Cross multiply
    649,445.72x = 896,196.49 × 359,039.89
  4. Step 4: Simplify right side
    649,445.72x = 321,770,289,410.63
  5. Step 5: Solve for x
    x = 321,770,289,410.63/649,445.72
  6. Step 6: Final answer
    x = 495,453.71

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1.5x scale

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.