Home / 686,399.16-1,028,986.20-349,251.24

Finding the Fourth Proportional to 686,399.16, 1,028,986.20 and 349,251.24

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Solution

The fourth proportional to 686,399.16, 1,028,986.20 and 349,251.24 is: 523,565.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,399.16 : 1,028,986.20 = 349,251.24 : x
  2. Step 2: Convert to fraction form
    686,399.16/1,028,986.20 = 349,251.24/x
  3. Step 3: Cross multiply
    686,399.16x = 1,028,986.20 × 349,251.24
  4. Step 4: Simplify right side
    686,399.16x = 359,374,706,292.89
  5. Step 5: Solve for x
    x = 359,374,706,292.89/686,399.16
  6. Step 6: Final answer
    x = 523,565.19

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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.