Home / 1,170,017.20-1,755,025.80-815,431.60

Finding the Fourth Proportional to 1,170,017.20, 1,755,025.80 and 815,431.60

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Solution

The fourth proportional to 1,170,017.20, 1,755,025.80 and 815,431.60 is: 1,223,147.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,170,017.20 : 1,755,025.80 = 815,431.60 : x
  2. Step 2: Convert to fraction form
    1,170,017.20/1,755,025.80 = 815,431.60/x
  3. Step 3: Cross multiply
    1,170,017.20x = 1,755,025.80 × 815,431.60
  4. Step 4: Simplify right side
    1,170,017.20x = 1,431,103,496,135.28
  5. Step 5: Solve for x
    x = 1,431,103,496,135.28/1,170,017.20
  6. Step 6: Final answer
    x = 1,223,147.40

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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.