Home / 1,128,383.60-1,691,496.60-418,221.20

Finding the Fourth Proportional to 1,128,383.60, 1,691,496.60 and 418,221.20

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Solution

The fourth proportional to 1,128,383.60, 1,691,496.60 and 418,221.20 is: 626,931.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,383.60 : 1,691,496.60 = 418,221.20 : x
  2. Step 2: Convert to fraction form
    1,128,383.60/1,691,496.60 = 418,221.20/x
  3. Step 3: Cross multiply
    1,128,383.60x = 1,691,496.60 × 418,221.20
  4. Step 4: Simplify right side
    1,128,383.60x = 707,419,737,847.92
  5. Step 5: Solve for x
    x = 707,419,737,847.92/1,128,383.60
  6. Step 6: Final answer
    x = 626,931.96

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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.