Home / 1,451,874.38-2,178,254.64-742,400.78

Finding the Fourth Proportional to 1,451,874.38, 2,178,254.64 and 742,400.78

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Solution

The fourth proportional to 1,451,874.38, 2,178,254.64 and 742,400.78 is: 1,113,827.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,451,874.38 : 2,178,254.64 = 742,400.78 : x
  2. Step 2: Convert to fraction form
    1,451,874.38/2,178,254.64 = 742,400.78/x
  3. Step 3: Cross multiply
    1,451,874.38x = 2,178,254.64 × 742,400.78
  4. Step 4: Simplify right side
    1,451,874.38x = 1,617,137,943,774.62
  5. Step 5: Solve for x
    x = 1,617,137,943,774.62/1,451,874.38
  6. Step 6: Final answer
    x = 1,113,827.73

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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.