Home / 2,681,864.72-4,020,139.92-1,259,374.40

Finding the Fourth Proportional to 2,681,864.72, 4,020,139.92 and 1,259,374.40

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Solution

The fourth proportional to 2,681,864.72, 4,020,139.92 and 1,259,374.40 is: 1,887,813.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,681,864.72 : 4,020,139.92 = 1,259,374.40 : x
  2. Step 2: Convert to fraction form
    2,681,864.72/4,020,139.92 = 1,259,374.40/x
  3. Step 3: Cross multiply
    2,681,864.72x = 4,020,139.92 × 1,259,374.40
  4. Step 4: Simplify right side
    2,681,864.72x = 5,062,861,299,666.05
  5. Step 5: Solve for x
    x = 5,062,861,299,666.05/2,681,864.72
  6. Step 6: Final answer
    x = 1,887,813.83

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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.