Home / 812,198.96-1,120,482.74-489,729.91

Finding the Fourth Proportional to 812,198.96, 1,120,482.74 and 489,729.91

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Solution

The fourth proportional to 812,198.96, 1,120,482.74 and 489,729.91 is: 675,615.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,198.96 : 1,120,482.74 = 489,729.91 : x
  2. Step 2: Convert to fraction form
    812,198.96/1,120,482.74 = 489,729.91/x
  3. Step 3: Cross multiply
    812,198.96x = 1,120,482.74 × 489,729.91
  4. Step 4: Simplify right side
    812,198.96x = 548,733,913,387.86
  5. Step 5: Solve for x
    x = 548,733,913,387.86/812,198.96
  6. Step 6: Final answer
    x = 675,615.14

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1.5x scale

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.