Home / 2,138,253.15-2,950,789.18-1,278,813.38

Finding the Fourth Proportional to 2,138,253.15, 2,950,789.18 and 1,278,813.38

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Solution

The fourth proportional to 2,138,253.15, 2,950,789.18 and 1,278,813.38 is: 1,764,762.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,138,253.15 : 2,950,789.18 = 1,278,813.38 : x
  2. Step 2: Convert to fraction form
    2,138,253.15/2,950,789.18 = 1,278,813.38/x
  3. Step 3: Cross multiply
    2,138,253.15x = 2,950,789.18 × 1,278,813.38
  4. Step 4: Simplify right side
    2,138,253.15x = 3,773,508,684,943.23
  5. Step 5: Solve for x
    x = 3,773,508,684,943.23/2,138,253.15
  6. Step 6: Final answer
    x = 1,764,762.36

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1.5x scale

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.