Home / 1,291,021.16-1,932,391.02-690,480.68

Finding the Fourth Proportional to 1,291,021.16, 1,932,391.02 and 690,480.68

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Solution

The fourth proportional to 1,291,021.16, 1,932,391.02 and 690,480.68 is: 1,033,506.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291,021.16 : 1,932,391.02 = 690,480.68 : x
  2. Step 2: Convert to fraction form
    1,291,021.16/1,932,391.02 = 690,480.68/x
  3. Step 3: Cross multiply
    1,291,021.16x = 1,932,391.02 × 690,480.68
  4. Step 4: Simplify right side
    1,291,021.16x = 1,334,278,665,515.49
  5. Step 5: Solve for x
    x = 1,334,278,665,515.49/1,291,021.16
  6. Step 6: Final answer
    x = 1,033,506.43

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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.