Home / 1,386,427.70-1,912,246.71-876,638

Finding the Fourth Proportional to 1,386,427.70, 1,912,246.71 and 876,638

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Solution

The fourth proportional to 1,386,427.70, 1,912,246.71 and 876,638 is: 1,209,113.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,427.70 : 1,912,246.71 = 876,638 : x
  2. Step 2: Convert to fraction form
    1,386,427.70/1,912,246.71 = 876,638/x
  3. Step 3: Cross multiply
    1,386,427.70x = 1,912,246.71 × 876,638
  4. Step 4: Simplify right side
    1,386,427.70x = 1,676,348,131,360.98
  5. Step 5: Solve for x
    x = 1,676,348,131,360.98/1,386,427.70
  6. Step 6: Final answer
    x = 1,209,113.27

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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.