Home / 1,288,209.60-1,932,314.40-728,337.60

Finding the Fourth Proportional to 1,288,209.60, 1,932,314.40 and 728,337.60

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Solution

The fourth proportional to 1,288,209.60, 1,932,314.40 and 728,337.60 is: 1,092,506.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,209.60 : 1,932,314.40 = 728,337.60 : x
  2. Step 2: Convert to fraction form
    1,288,209.60/1,932,314.40 = 728,337.60/x
  3. Step 3: Cross multiply
    1,288,209.60x = 1,932,314.40 × 728,337.60
  4. Step 4: Simplify right side
    1,288,209.60x = 1,407,377,232,541.44
  5. Step 5: Solve for x
    x = 1,407,377,232,541.44/1,288,209.60
  6. Step 6: Final answer
    x = 1,092,506.40

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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.