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Finding the Fourth Proportional to 678,491.80, 1,017,737.70 and 173,051.80

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Solution

The fourth proportional to 678,491.80, 1,017,737.70 and 173,051.80 is: 259,577.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,491.80 : 1,017,737.70 = 173,051.80 : x
  2. Step 2: Convert to fraction form
    678,491.80/1,017,737.70 = 173,051.80/x
  3. Step 3: Cross multiply
    678,491.80x = 1,017,737.70 × 173,051.80
  4. Step 4: Simplify right side
    678,491.80x = 176,121,340,912.86
  5. Step 5: Solve for x
    x = 176,121,340,912.86/678,491.80
  6. Step 6: Final answer
    x = 259,577.70

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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.