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Finding the Fourth Proportional to 880,447.70, 1,320,671.55 and 408,055.70

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Solution

The fourth proportional to 880,447.70, 1,320,671.55 and 408,055.70 is: 612,083.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,447.70 : 1,320,671.55 = 408,055.70 : x
  2. Step 2: Convert to fraction form
    880,447.70/1,320,671.55 = 408,055.70/x
  3. Step 3: Cross multiply
    880,447.70x = 1,320,671.55 × 408,055.70
  4. Step 4: Simplify right side
    880,447.70x = 538,907,553,805.34
  5. Step 5: Solve for x
    x = 538,907,553,805.34/880,447.70
  6. Step 6: Final answer
    x = 612,083.55

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.