Home / 1,092,137.87-1,638,443.28-418,219.20

Finding the Fourth Proportional to 1,092,137.87, 1,638,443.28 and 418,219.20

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Solution

The fourth proportional to 1,092,137.87, 1,638,443.28 and 418,219.20 is: 627,419.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,092,137.87 : 1,638,443.28 = 418,219.20 : x
  2. Step 2: Convert to fraction form
    1,092,137.87/1,638,443.28 = 418,219.20/x
  3. Step 3: Cross multiply
    1,092,137.87x = 1,638,443.28 × 418,219.20
  4. Step 4: Simplify right side
    1,092,137.87x = 685,228,437,806.98
  5. Step 5: Solve for x
    x = 685,228,437,806.98/1,092,137.87
  6. Step 6: Final answer
    x = 627,419.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.