Home / 690,445-1,035,680.46-191,821.96

Finding the Fourth Proportional to 690,445, 1,035,680.46 and 191,821.96

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Solution

The fourth proportional to 690,445, 1,035,680.46 and 191,821.96 is: 287,736.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,445 : 1,035,680.46 = 191,821.96 : x
  2. Step 2: Convert to fraction form
    690,445/1,035,680.46 = 191,821.96/x
  3. Step 3: Cross multiply
    690,445x = 1,035,680.46 × 191,821.96
  4. Step 4: Simplify right side
    690,445x = 198,666,255,770.90
  5. Step 5: Solve for x
    x = 198,666,255,770.90/690,445
  6. Step 6: Final answer
    x = 287,736.54

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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.