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Finding the Fourth Proportional to 548,890.80, 823,854.60 and 338,938.80

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Solution

The fourth proportional to 548,890.80, 823,854.60 and 338,938.80 is: 508,728.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,890.80 : 823,854.60 = 338,938.80 : x
  2. Step 2: Convert to fraction form
    548,890.80/823,854.60 = 338,938.80/x
  3. Step 3: Cross multiply
    548,890.80x = 823,854.60 × 338,938.80
  4. Step 4: Simplify right side
    548,890.80x = 279,236,289,498.48
  5. Step 5: Solve for x
    x = 279,236,289,498.48/548,890.80
  6. Step 6: Final answer
    x = 508,728.31

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1.5x scale

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.