Home / 1,291,020.66-1,932,390.27-690,480.18

Finding the Fourth Proportional to 1,291,020.66, 1,932,390.27 and 690,480.18

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Solution

The fourth proportional to 1,291,020.66, 1,932,390.27 and 690,480.18 is: 1,033,505.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291,020.66 : 1,932,390.27 = 690,480.18 : x
  2. Step 2: Convert to fraction form
    1,291,020.66/1,932,390.27 = 690,480.18/x
  3. Step 3: Cross multiply
    1,291,020.66x = 1,932,390.27 × 690,480.18
  4. Step 4: Simplify right side
    1,291,020.66x = 1,334,277,181,459.85
  5. Step 5: Solve for x
    x = 1,334,277,181,459.85/1,291,020.66
  6. Step 6: Final answer
    x = 1,033,505.68

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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.