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Finding the Fourth Proportional to 578,428.80, 867,610.80 and 179,066.40

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Solution

The fourth proportional to 578,428.80, 867,610.80 and 179,066.40 is: 268,589.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,428.80 : 867,610.80 = 179,066.40 : x
  2. Step 2: Convert to fraction form
    578,428.80/867,610.80 = 179,066.40/x
  3. Step 3: Cross multiply
    578,428.80x = 867,610.80 × 179,066.40
  4. Step 4: Simplify right side
    578,428.80x = 155,359,942,557.12
  5. Step 5: Solve for x
    x = 155,359,942,557.12/578,428.80
  6. Step 6: Final answer
    x = 268,589.57

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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.