Home / 905,443.18-1,247,929.95-663,211.06

Finding the Fourth Proportional to 905,443.18, 1,247,929.95 and 663,211.06

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Solution

The fourth proportional to 905,443.18, 1,247,929.95 and 663,211.06 is: 914,072.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,443.18 : 1,247,929.95 = 663,211.06 : x
  2. Step 2: Convert to fraction form
    905,443.18/1,247,929.95 = 663,211.06/x
  3. Step 3: Cross multiply
    905,443.18x = 1,247,929.95 × 663,211.06
  4. Step 4: Simplify right side
    905,443.18x = 827,640,944,945.25
  5. Step 5: Solve for x
    x = 827,640,944,945.25/905,443.18
  6. Step 6: Final answer
    x = 914,072.76

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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.