Home / 1,211,456.72-1,671,821.48-667,612.01

Finding the Fourth Proportional to 1,211,456.72, 1,671,821.48 and 667,612.01

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Solution

The fourth proportional to 1,211,456.72, 1,671,821.48 and 667,612.01 is: 921,310.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,456.72 : 1,671,821.48 = 667,612.01 : x
  2. Step 2: Convert to fraction form
    1,211,456.72/1,671,821.48 = 667,612.01/x
  3. Step 3: Cross multiply
    1,211,456.72x = 1,671,821.48 × 667,612.01
  4. Step 4: Simplify right side
    1,211,456.72x = 1,116,128,104,472.56
  5. Step 5: Solve for x
    x = 1,116,128,104,472.56/1,211,456.72
  6. Step 6: Final answer
    x = 921,310.75

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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.