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Finding the Fourth Proportional to 671,921.60, 927,251.88 and 370,115.60

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Solution

The fourth proportional to 671,921.60, 927,251.88 and 370,115.60 is: 510,759.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,921.60 : 927,251.88 = 370,115.60 : x
  2. Step 2: Convert to fraction form
    671,921.60/927,251.88 = 370,115.60/x
  3. Step 3: Cross multiply
    671,921.60x = 927,251.88 × 370,115.60
  4. Step 4: Simplify right side
    671,921.60x = 343,190,385,917.33
  5. Step 5: Solve for x
    x = 343,190,385,917.33/671,921.60
  6. Step 6: Final answer
    x = 510,759.57

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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.