Home / 1,119,785.20-1,679,677.80-665,107.90

Finding the Fourth Proportional to 1,119,785.20, 1,679,677.80 and 665,107.90

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Solution

The fourth proportional to 1,119,785.20, 1,679,677.80 and 665,107.90 is: 997,661.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,119,785.20 : 1,679,677.80 = 665,107.90 : x
  2. Step 2: Convert to fraction form
    1,119,785.20/1,679,677.80 = 665,107.90/x
  3. Step 3: Cross multiply
    1,119,785.20x = 1,679,677.80 × 665,107.90
  4. Step 4: Simplify right side
    1,119,785.20x = 1,117,166,974,234.62
  5. Step 5: Solve for x
    x = 1,117,166,974,234.62/1,119,785.20
  6. Step 6: Final answer
    x = 997,661.85

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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.