Home / 1,078,289.92-1,487,380.72-690,974.96

Finding the Fourth Proportional to 1,078,289.92, 1,487,380.72 and 690,974.96

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Solution

The fourth proportional to 1,078,289.92, 1,487,380.72 and 690,974.96 is: 953,122.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,078,289.92 : 1,487,380.72 = 690,974.96 : x
  2. Step 2: Convert to fraction form
    1,078,289.92/1,487,380.72 = 690,974.96/x
  3. Step 3: Cross multiply
    1,078,289.92x = 1,487,380.72 × 690,974.96
  4. Step 4: Simplify right side
    1,078,289.92x = 1,027,742,833,506.77
  5. Step 5: Solve for x
    x = 1,027,742,833,506.77/1,078,289.92
  6. Step 6: Final answer
    x = 953,122.92

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.