Home / 494,142.12-681,989.28-312,870.92

Finding the Fourth Proportional to 494,142.12, 681,989.28 and 312,870.92

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Solution

The fourth proportional to 494,142.12, 681,989.28 and 312,870.92 is: 431,808.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,142.12 : 681,989.28 = 312,870.92 : x
  2. Step 2: Convert to fraction form
    494,142.12/681,989.28 = 312,870.92/x
  3. Step 3: Cross multiply
    494,142.12x = 681,989.28 × 312,870.92
  4. Step 4: Simplify right side
    494,142.12x = 213,374,613,463.74
  5. Step 5: Solve for x
    x = 213,374,613,463.74/494,142.12
  6. Step 6: Final answer
    x = 431,808.19

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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.