Home / 999,078.38-1,378,891.32-742,658.30

Finding the Fourth Proportional to 999,078.38, 1,378,891.32 and 742,658.30

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Solution

The fourth proportional to 999,078.38, 1,378,891.32 and 742,658.30 is: 1,024,989.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,078.38 : 1,378,891.32 = 742,658.30 : x
  2. Step 2: Convert to fraction form
    999,078.38/1,378,891.32 = 742,658.30/x
  3. Step 3: Cross multiply
    999,078.38x = 1,378,891.32 × 742,658.30
  4. Step 4: Simplify right side
    999,078.38x = 1,024,045,083,595.96
  5. Step 5: Solve for x
    x = 1,024,045,083,595.96/999,078.38
  6. Step 6: Final answer
    x = 1,024,989.73

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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.