Home / 1,119,742.20-1,680,002.10-489,108.60

Finding the Fourth Proportional to 1,119,742.20, 1,680,002.10 and 489,108.60

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Solution

The fourth proportional to 1,119,742.20, 1,680,002.10 and 489,108.60 is: 733,832.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,119,742.20 : 1,680,002.10 = 489,108.60 : x
  2. Step 2: Convert to fraction form
    1,119,742.20/1,680,002.10 = 489,108.60/x
  3. Step 3: Cross multiply
    1,119,742.20x = 1,680,002.10 × 489,108.60
  4. Step 4: Simplify right side
    1,119,742.20x = 821,703,475,128.06
  5. Step 5: Solve for x
    x = 821,703,475,128.06/1,119,742.20
  6. Step 6: Final answer
    x = 733,832.73

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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.