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Finding the Fourth Proportional to 878,046.24, 1,211,703.84 and 475,638.24

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Solution

The fourth proportional to 878,046.24, 1,211,703.84 and 475,638.24 is: 656,380.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,046.24 : 1,211,703.84 = 475,638.24 : x
  2. Step 2: Convert to fraction form
    878,046.24/1,211,703.84 = 475,638.24/x
  3. Step 3: Cross multiply
    878,046.24x = 1,211,703.84 × 475,638.24
  4. Step 4: Simplify right side
    878,046.24x = 576,332,681,858.84
  5. Step 5: Solve for x
    x = 576,332,681,858.84/878,046.24
  6. Step 6: Final answer
    x = 656,380.79

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Double scale
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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.