Home / 1,138,693.80-1,706,874.30-665,135.40

Finding the Fourth Proportional to 1,138,693.80, 1,706,874.30 and 665,135.40

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Solution

The fourth proportional to 1,138,693.80, 1,706,874.30 and 665,135.40 is: 997,021.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,138,693.80 : 1,706,874.30 = 665,135.40 : x
  2. Step 2: Convert to fraction form
    1,138,693.80/1,706,874.30 = 665,135.40/x
  3. Step 3: Cross multiply
    1,138,693.80x = 1,706,874.30 × 665,135.40
  4. Step 4: Simplify right side
    1,138,693.80x = 1,135,302,520,280.22
  5. Step 5: Solve for x
    x = 1,135,302,520,280.22/1,138,693.80
  6. Step 6: Final answer
    x = 997,021.78

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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.