Home / 2,140,837.86-3,210,456.71-861,013.36

Finding the Fourth Proportional to 2,140,837.86, 3,210,456.71 and 861,013.36

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Solution

The fourth proportional to 2,140,837.86, 3,210,456.71 and 861,013.36 is: 1,291,198.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,140,837.86 : 3,210,456.71 = 861,013.36 : x
  2. Step 2: Convert to fraction form
    2,140,837.86/3,210,456.71 = 861,013.36/x
  3. Step 3: Cross multiply
    2,140,837.86x = 3,210,456.71 × 861,013.36
  4. Step 4: Simplify right side
    2,140,837.86x = 2,764,246,119,011.65
  5. Step 5: Solve for x
    x = 2,764,246,119,011.65/2,140,837.86
  6. Step 6: Final answer
    x = 1,291,198.26

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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.