Home / 2,639,644.50-3,642,709.42-1,432,420.50

Finding the Fourth Proportional to 2,639,644.50, 3,642,709.42 and 1,432,420.50

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Solution

The fourth proportional to 2,639,644.50, 3,642,709.42 and 1,432,420.50 is: 1,976,740.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,639,644.50 : 3,642,709.42 = 1,432,420.50 : x
  2. Step 2: Convert to fraction form
    2,639,644.50/3,642,709.42 = 1,432,420.50/x
  3. Step 3: Cross multiply
    2,639,644.50x = 3,642,709.42 × 1,432,420.50
  4. Step 4: Simplify right side
    2,639,644.50x = 5,217,891,648,751.11
  5. Step 5: Solve for x
    x = 5,217,891,648,751.11/2,639,644.50
  6. Step 6: Final answer
    x = 1,976,740.30

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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.