Home / 1,225,118.93-1,692,392.98-981,720.57

Finding the Fourth Proportional to 1,225,118.93, 1,692,392.98 and 981,720.57

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Solution

The fourth proportional to 1,225,118.93, 1,692,392.98 and 981,720.57 is: 1,356,159.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,225,118.93 : 1,692,392.98 = 981,720.57 : x
  2. Step 2: Convert to fraction form
    1,225,118.93/1,692,392.98 = 981,720.57/x
  3. Step 3: Cross multiply
    1,225,118.93x = 1,692,392.98 × 981,720.57
  4. Step 4: Simplify right side
    1,225,118.93x = 1,661,456,998,535.30
  5. Step 5: Solve for x
    x = 1,661,456,998,535.30/1,225,118.93
  6. Step 6: Final answer
    x = 1,356,159.76

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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.