Home / 2,787,142.87-4,181,129.84-989,875.38

Finding the Fourth Proportional to 2,787,142.87, 4,181,129.84 and 989,875.38

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Solution

The fourth proportional to 2,787,142.87, 4,181,129.84 and 989,875.38 is: 1,484,960.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,787,142.87 : 4,181,129.84 = 989,875.38 : x
  2. Step 2: Convert to fraction form
    2,787,142.87/4,181,129.84 = 989,875.38/x
  3. Step 3: Cross multiply
    2,787,142.87x = 4,181,129.84 × 989,875.38
  4. Step 4: Simplify right side
    2,787,142.87x = 4,138,797,501,785.22
  5. Step 5: Solve for x
    x = 4,138,797,501,785.22/2,787,142.87
  6. Step 6: Final answer
    x = 1,484,960.65

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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.