Home / 1,217,780.12-1,681,363.50-759,078.20

Finding the Fourth Proportional to 1,217,780.12, 1,681,363.50 and 759,078.20

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Solution

The fourth proportional to 1,217,780.12, 1,681,363.50 and 759,078.20 is: 1,048,043.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,217,780.12 : 1,681,363.50 = 759,078.20 : x
  2. Step 2: Convert to fraction form
    1,217,780.12/1,681,363.50 = 759,078.20/x
  3. Step 3: Cross multiply
    1,217,780.12x = 1,681,363.50 × 759,078.20
  4. Step 4: Simplify right side
    1,217,780.12x = 1,276,286,379,125.70
  5. Step 5: Solve for x
    x = 1,276,286,379,125.70/1,217,780.12
  6. Step 6: Final answer
    x = 1,048,043.37

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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.