Home / 876,400.28-1,311,141.55-663,780.83

Finding the Fourth Proportional to 876,400.28, 1,311,141.55 and 663,780.83

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Solution

The fourth proportional to 876,400.28, 1,311,141.55 and 663,780.83 is: 993,051.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,400.28 : 1,311,141.55 = 663,780.83 : x
  2. Step 2: Convert to fraction form
    876,400.28/1,311,141.55 = 663,780.83/x
  3. Step 3: Cross multiply
    876,400.28x = 1,311,141.55 × 663,780.83
  4. Step 4: Simplify right side
    876,400.28x = 870,310,616,535.62
  5. Step 5: Solve for x
    x = 870,310,616,535.62/876,400.28
  6. Step 6: Final answer
    x = 993,051.50

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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.