Home / 828,885.08-1,143,863.16-489,375.20

Finding the Fourth Proportional to 828,885.08, 1,143,863.16 and 489,375.20

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Solution

The fourth proportional to 828,885.08, 1,143,863.16 and 489,375.20 is: 675,338.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,885.08 : 1,143,863.16 = 489,375.20 : x
  2. Step 2: Convert to fraction form
    828,885.08/1,143,863.16 = 489,375.20/x
  3. Step 3: Cross multiply
    828,885.08x = 1,143,863.16 × 489,375.20
  4. Step 4: Simplify right side
    828,885.08x = 559,778,262,697.63
  5. Step 5: Solve for x
    x = 559,778,262,697.63/828,885.08
  6. Step 6: Final answer
    x = 675,338.81

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Double scale
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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.