Home / 1,296,765.20-1,943,981.40-823,206.80

Finding the Fourth Proportional to 1,296,765.20, 1,943,981.40 and 823,206.80

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Solution

The fourth proportional to 1,296,765.20, 1,943,981.40 and 823,206.80 is: 1,234,069.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,296,765.20 : 1,943,981.40 = 823,206.80 : x
  2. Step 2: Convert to fraction form
    1,296,765.20/1,943,981.40 = 823,206.80/x
  3. Step 3: Cross multiply
    1,296,765.20x = 1,943,981.40 × 823,206.80
  4. Step 4: Simplify right side
    1,296,765.20x = 1,600,298,707,553.52
  5. Step 5: Solve for x
    x = 1,600,298,707,553.52/1,296,765.20
  6. Step 6: Final answer
    x = 1,234,069.75

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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.