Home / 828,884.08-1,143,861.78-489,374.20

Finding the Fourth Proportional to 828,884.08, 1,143,861.78 and 489,374.20

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Solution

The fourth proportional to 828,884.08, 1,143,861.78 and 489,374.20 is: 675,337.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,884.08 : 1,143,861.78 = 489,374.20 : x
  2. Step 2: Convert to fraction form
    828,884.08/1,143,861.78 = 489,374.20/x
  3. Step 3: Cross multiply
    828,884.08x = 1,143,861.78 × 489,374.20
  4. Step 4: Simplify right side
    828,884.08x = 559,776,443,498.08
  5. Step 5: Solve for x
    x = 559,776,443,498.08/828,884.08
  6. Step 6: Final answer
    x = 675,337.43

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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.