Home / 2,666,390.40-4,000,168.80-1,319,198.40

Finding the Fourth Proportional to 2,666,390.40, 4,000,168.80 and 1,319,198.40

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Solution

The fourth proportional to 2,666,390.40, 4,000,168.80 and 1,319,198.40 is: 1,979,086.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,666,390.40 : 4,000,168.80 = 1,319,198.40 : x
  2. Step 2: Convert to fraction form
    2,666,390.40/4,000,168.80 = 1,319,198.40/x
  3. Step 3: Cross multiply
    2,666,390.40x = 4,000,168.80 × 1,319,198.40
  4. Step 4: Simplify right side
    2,666,390.40x = 5,277,016,280,689.92
  5. Step 5: Solve for x
    x = 5,277,016,280,689.92/2,666,390.40
  6. Step 6: Final answer
    x = 1,979,086.14

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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.