Home / 828,170.60-1,242,255.90-728,443.40

Finding the Fourth Proportional to 828,170.60, 1,242,255.90 and 728,443.40

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Solution

The fourth proportional to 828,170.60, 1,242,255.90 and 728,443.40 is: 1,092,665.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,170.60 : 1,242,255.90 = 728,443.40 : x
  2. Step 2: Convert to fraction form
    828,170.60/1,242,255.90 = 728,443.40/x
  3. Step 3: Cross multiply
    828,170.60x = 1,242,255.90 × 728,443.40
  4. Step 4: Simplify right side
    828,170.60x = 904,913,111,466.06
  5. Step 5: Solve for x
    x = 904,913,111,466.06/828,170.60
  6. Step 6: Final answer
    x = 1,092,665.10

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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.