Home / 678,343.29-1,017,537.78-341,200.13

Finding the Fourth Proportional to 678,343.29, 1,017,537.78 and 341,200.13

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Solution

The fourth proportional to 678,343.29, 1,017,537.78 and 341,200.13 is: 511,811.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,343.29 : 1,017,537.78 = 341,200.13 : x
  2. Step 2: Convert to fraction form
    678,343.29/1,017,537.78 = 341,200.13/x
  3. Step 3: Cross multiply
    678,343.29x = 1,017,537.78 × 341,200.13
  4. Step 4: Simplify right side
    678,343.29x = 347,184,019,007.72
  5. Step 5: Solve for x
    x = 347,184,019,007.72/678,343.29
  6. Step 6: Final answer
    x = 511,811.68

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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.