Home / 687,880.20-1,031,469-404,125.04

Finding the Fourth Proportional to 687,880.20, 1,031,469 and 404,125.04

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Solution

The fourth proportional to 687,880.20, 1,031,469 and 404,125.04 is: 605,981.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,880.20 : 1,031,469 = 404,125.04 : x
  2. Step 2: Convert to fraction form
    687,880.20/1,031,469 = 404,125.04/x
  3. Step 3: Cross multiply
    687,880.20x = 1,031,469 × 404,125.04
  4. Step 4: Simplify right side
    687,880.20x = 416,842,450,883.76
  5. Step 5: Solve for x
    x = 416,842,450,883.76/687,880.20
  6. Step 6: Final answer
    x = 605,981.17

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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.