Home / 485,401.44-669,705.55-281,411.65

Finding the Fourth Proportional to 485,401.44, 669,705.55 and 281,411.65

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Solution

The fourth proportional to 485,401.44, 669,705.55 and 281,411.65 is: 388,262.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,401.44 : 669,705.55 = 281,411.65 : x
  2. Step 2: Convert to fraction form
    485,401.44/669,705.55 = 281,411.65/x
  3. Step 3: Cross multiply
    485,401.44x = 669,705.55 × 281,411.65
  4. Step 4: Simplify right side
    485,401.44x = 188,462,943,839.66
  5. Step 5: Solve for x
    x = 188,462,943,839.66/485,401.44
  6. Step 6: Final answer
    x = 388,262.02

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1.5x scale

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.