Home / 1,345,215.96-1,855,347.84-861,825.78

Finding the Fourth Proportional to 1,345,215.96, 1,855,347.84 and 861,825.78

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Solution

The fourth proportional to 1,345,215.96, 1,855,347.84 and 861,825.78 is: 1,188,646.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,345,215.96 : 1,855,347.84 = 861,825.78 : x
  2. Step 2: Convert to fraction form
    1,345,215.96/1,855,347.84 = 861,825.78/x
  3. Step 3: Cross multiply
    1,345,215.96x = 1,855,347.84 × 861,825.78
  4. Step 4: Simplify right side
    1,345,215.96x = 1,598,986,599,379.32
  5. Step 5: Solve for x
    x = 1,598,986,599,379.32/1,345,215.96
  6. Step 6: Final answer
    x = 1,188,646.77

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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.