Home / 492,617.04-679,819.05-288,619.14

Finding the Fourth Proportional to 492,617.04, 679,819.05 and 288,619.14

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Solution

The fourth proportional to 492,617.04, 679,819.05 and 288,619.14 is: 398,298.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,617.04 : 679,819.05 = 288,619.14 : x
  2. Step 2: Convert to fraction form
    492,617.04/679,819.05 = 288,619.14/x
  3. Step 3: Cross multiply
    492,617.04x = 679,819.05 × 288,619.14
  4. Step 4: Simplify right side
    492,617.04x = 196,208,789,566.62
  5. Step 5: Solve for x
    x = 196,208,789,566.62/492,617.04
  6. Step 6: Final answer
    x = 398,298.83

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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.