Home / 1,221,901.32-1,686,233.22-678,039.24

Finding the Fourth Proportional to 1,221,901.32, 1,686,233.22 and 678,039.24

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Solution

The fourth proportional to 1,221,901.32, 1,686,233.22 and 678,039.24 is: 935,699.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,901.32 : 1,686,233.22 = 678,039.24 : x
  2. Step 2: Convert to fraction form
    1,221,901.32/1,686,233.22 = 678,039.24/x
  3. Step 3: Cross multiply
    1,221,901.32x = 1,686,233.22 × 678,039.24
  4. Step 4: Simplify right side
    1,221,901.32x = 1,143,332,290,951.55
  5. Step 5: Solve for x
    x = 1,143,332,290,951.55/1,221,901.32
  6. Step 6: Final answer
    x = 935,699.37

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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.