Home / 2,787,206.28-4,181,224.86-989,938.76

Finding the Fourth Proportional to 2,787,206.28, 4,181,224.86 and 989,938.76

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Solution

The fourth proportional to 2,787,206.28, 4,181,224.86 and 989,938.76 is: 1,485,055.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,787,206.28 : 4,181,224.86 = 989,938.76 : x
  2. Step 2: Convert to fraction form
    2,787,206.28/4,181,224.86 = 989,938.76/x
  3. Step 3: Cross multiply
    2,787,206.28x = 4,181,224.86 × 989,938.76
  4. Step 4: Simplify right side
    2,787,206.28x = 4,139,156,553,189.57
  5. Step 5: Solve for x
    x = 4,139,156,553,189.57/2,787,206.28
  6. Step 6: Final answer
    x = 1,485,055.69

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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.