Home / 821,385.60-1,232,769.60-401,020.80

Finding the Fourth Proportional to 821,385.60, 1,232,769.60 and 401,020.80

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Solution

The fourth proportional to 821,385.60, 1,232,769.60 and 401,020.80 is: 601,868.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,385.60 : 1,232,769.60 = 401,020.80 : x
  2. Step 2: Convert to fraction form
    821,385.60/1,232,769.60 = 401,020.80/x
  3. Step 3: Cross multiply
    821,385.60x = 1,232,769.60 × 401,020.80
  4. Step 4: Simplify right side
    821,385.60x = 494,366,251,207.68
  5. Step 5: Solve for x
    x = 494,366,251,207.68/821,385.60
  6. Step 6: Final answer
    x = 601,868.66

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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.