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Finding the Fourth Proportional to 855,778.12, 1,180,991.84 and 468,609.88

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Solution

The fourth proportional to 855,778.12, 1,180,991.84 and 468,609.88 is: 646,691.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,778.12 : 1,180,991.84 = 468,609.88 : x
  2. Step 2: Convert to fraction form
    855,778.12/1,180,991.84 = 468,609.88/x
  3. Step 3: Cross multiply
    855,778.12x = 1,180,991.84 × 468,609.88
  4. Step 4: Simplify right side
    855,778.12x = 553,424,444,423.38
  5. Step 5: Solve for x
    x = 553,424,444,423.38/855,778.12
  6. Step 6: Final answer
    x = 646,691.51

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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.