Home / 426,426.20-639,638.04-173,647.16

Finding the Fourth Proportional to 426,426.20, 639,638.04 and 173,647.16

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Solution

The fourth proportional to 426,426.20, 639,638.04 and 173,647.16 is: 260,470.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,426.20 : 639,638.04 = 173,647.16 : x
  2. Step 2: Convert to fraction form
    426,426.20/639,638.04 = 173,647.16/x
  3. Step 3: Cross multiply
    426,426.20x = 639,638.04 × 173,647.16
  4. Step 4: Simplify right side
    426,426.20x = 111,071,329,073.97
  5. Step 5: Solve for x
    x = 111,071,329,073.97/426,426.20
  6. Step 6: Final answer
    x = 260,470.23

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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.