Home / 498,485.66-687,969.38-280,701.36

Finding the Fourth Proportional to 498,485.66, 687,969.38 and 280,701.36

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Solution

The fourth proportional to 498,485.66, 687,969.38 and 280,701.36 is: 387,401.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,485.66 : 687,969.38 = 280,701.36 : x
  2. Step 2: Convert to fraction form
    498,485.66/687,969.38 = 280,701.36/x
  3. Step 3: Cross multiply
    498,485.66x = 687,969.38 × 280,701.36
  4. Step 4: Simplify right side
    498,485.66x = 193,113,941,306.11
  5. Step 5: Solve for x
    x = 193,113,941,306.11/498,485.66
  6. Step 6: Final answer
    x = 387,401.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.