Home / 921,100.20-1,381,844.70-290,077.80

Finding the Fourth Proportional to 921,100.20, 1,381,844.70 and 290,077.80

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Solution

The fourth proportional to 921,100.20, 1,381,844.70 and 290,077.80 is: 435,177.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,100.20 : 1,381,844.70 = 290,077.80 : x
  2. Step 2: Convert to fraction form
    921,100.20/1,381,844.70 = 290,077.80/x
  3. Step 3: Cross multiply
    921,100.20x = 1,381,844.70 × 290,077.80
  4. Step 4: Simplify right side
    921,100.20x = 400,842,470,517.66
  5. Step 5: Solve for x
    x = 400,842,470,517.66/921,100.20
  6. Step 6: Final answer
    x = 435,177.92

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Double scale
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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.