Home / 2,121,294.92-2,928,003.86-1,386,359.76

Finding the Fourth Proportional to 2,121,294.92, 2,928,003.86 and 1,386,359.76

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Solution

The fourth proportional to 2,121,294.92, 2,928,003.86 and 1,386,359.76 is: 1,913,579.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,121,294.92 : 2,928,003.86 = 1,386,359.76 : x
  2. Step 2: Convert to fraction form
    2,121,294.92/2,928,003.86 = 1,386,359.76/x
  3. Step 3: Cross multiply
    2,121,294.92x = 2,928,003.86 × 1,386,359.76
  4. Step 4: Simplify right side
    2,121,294.92x = 4,059,266,721,696.88
  5. Step 5: Solve for x
    x = 4,059,266,721,696.88/2,121,294.92
  6. Step 6: Final answer
    x = 1,913,579.62

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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.