Home / 3,119,078.30-4,678,617.45-1,917,103.10

Finding the Fourth Proportional to 3,119,078.30, 4,678,617.45 and 1,917,103.10

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Solution

The fourth proportional to 3,119,078.30, 4,678,617.45 and 1,917,103.10 is: 2,875,654.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,119,078.30 : 4,678,617.45 = 1,917,103.10 : x
  2. Step 2: Convert to fraction form
    3,119,078.30/4,678,617.45 = 1,917,103.10/x
  3. Step 3: Cross multiply
    3,119,078.30x = 4,678,617.45 × 1,917,103.10
  4. Step 4: Simplify right side
    3,119,078.30x = 8,969,392,017,109.10
  5. Step 5: Solve for x
    x = 8,969,392,017,109.10/3,119,078.30
  6. Step 6: Final answer
    x = 2,875,654.65

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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.