Home / 1,263,169.80-1,894,770.90-421,721.55

Finding the Fourth Proportional to 1,263,169.80, 1,894,770.90 and 421,721.55

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Solution

The fourth proportional to 1,263,169.80, 1,894,770.90 and 421,721.55 is: 632,587.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,263,169.80 : 1,894,770.90 = 421,721.55 : x
  2. Step 2: Convert to fraction form
    1,263,169.80/1,894,770.90 = 421,721.55/x
  3. Step 3: Cross multiply
    1,263,169.80x = 1,894,770.90 × 421,721.55
  4. Step 4: Simplify right side
    1,263,169.80x = 799,065,720,842.90
  5. Step 5: Solve for x
    x = 799,065,720,842.90/1,263,169.80
  6. Step 6: Final answer
    x = 632,587.73

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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.