Home / 1,408,493.80-1,943,655.78-864,519.40

Finding the Fourth Proportional to 1,408,493.80, 1,943,655.78 and 864,519.40

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Solution

The fourth proportional to 1,408,493.80, 1,943,655.78 and 864,519.40 is: 1,192,996.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,408,493.80 : 1,943,655.78 = 864,519.40 : x
  2. Step 2: Convert to fraction form
    1,408,493.80/1,943,655.78 = 864,519.40/x
  3. Step 3: Cross multiply
    1,408,493.80x = 1,943,655.78 × 864,519.40
  4. Step 4: Simplify right side
    1,408,493.80x = 1,680,328,128,732.13
  5. Step 5: Solve for x
    x = 1,680,328,128,732.13/1,408,493.80
  6. Step 6: Final answer
    x = 1,192,996.47

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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.