Home / 1,078,588.49-1,488,991-670,821.78

Finding the Fourth Proportional to 1,078,588.49, 1,488,991 and 670,821.78

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Solution

The fourth proportional to 1,078,588.49, 1,488,991 and 670,821.78 is: 926,069.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,078,588.49 : 1,488,991 = 670,821.78 : x
  2. Step 2: Convert to fraction form
    1,078,588.49/1,488,991 = 670,821.78/x
  3. Step 3: Cross multiply
    1,078,588.49x = 1,488,991 × 670,821.78
  4. Step 4: Simplify right side
    1,078,588.49x = 998,847,593,023.98
  5. Step 5: Solve for x
    x = 998,847,593,023.98/1,078,588.49
  6. Step 6: Final answer
    x = 926,069.21

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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.