Home / 818,905.60-1,228,139.70-250,285.60

Finding the Fourth Proportional to 818,905.60, 1,228,139.70 and 250,285.60

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Solution

The fourth proportional to 818,905.60, 1,228,139.70 and 250,285.60 is: 375,361.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,905.60 : 1,228,139.70 = 250,285.60 : x
  2. Step 2: Convert to fraction form
    818,905.60/1,228,139.70 = 250,285.60/x
  3. Step 3: Cross multiply
    818,905.60x = 1,228,139.70 × 250,285.60
  4. Step 4: Simplify right side
    818,905.60x = 307,385,681,698.32
  5. Step 5: Solve for x
    x = 307,385,681,698.32/818,905.60
  6. Step 6: Final answer
    x = 375,361.56

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Double scale
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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.