Home / 2,129,820.20-2,939,140.15-1,162,943.60

Finding the Fourth Proportional to 2,129,820.20, 2,939,140.15 and 1,162,943.60

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Solution

The fourth proportional to 2,129,820.20, 2,939,140.15 and 1,162,943.60 is: 1,604,855.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,129,820.20 : 2,939,140.15 = 1,162,943.60 : x
  2. Step 2: Convert to fraction form
    2,129,820.20/2,939,140.15 = 1,162,943.60/x
  3. Step 3: Cross multiply
    2,129,820.20x = 2,939,140.15 × 1,162,943.60
  4. Step 4: Simplify right side
    2,129,820.20x = 3,418,054,226,945.54
  5. Step 5: Solve for x
    x = 3,418,054,226,945.54/2,129,820.20
  6. Step 6: Final answer
    x = 1,604,855.77

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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.