Home / 1,425,654.40-1,967,404.72-781,115.84

Finding the Fourth Proportional to 1,425,654.40, 1,967,404.72 and 781,115.84

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Solution

The fourth proportional to 1,425,654.40, 1,967,404.72 and 781,115.84 is: 1,077,940.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,425,654.40 : 1,967,404.72 = 781,115.84 : x
  2. Step 2: Convert to fraction form
    1,425,654.40/1,967,404.72 = 781,115.84/x
  3. Step 3: Cross multiply
    1,425,654.40x = 1,967,404.72 × 781,115.84
  4. Step 4: Simplify right side
    1,425,654.40x = 1,536,770,990,482.76
  5. Step 5: Solve for x
    x = 1,536,770,990,482.76/1,425,654.40
  6. Step 6: Final answer
    x = 1,077,940.76

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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.