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Finding the Fourth Proportional to 547,324.40, 820,986.60 and 448,909.40

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Solution

The fourth proportional to 547,324.40, 820,986.60 and 448,909.40 is: 673,364.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,324.40 : 820,986.60 = 448,909.40 : x
  2. Step 2: Convert to fraction form
    547,324.40/820,986.60 = 448,909.40/x
  3. Step 3: Cross multiply
    547,324.40x = 820,986.60 × 448,909.40
  4. Step 4: Simplify right side
    547,324.40x = 368,548,602,014.04
  5. Step 5: Solve for x
    x = 368,548,602,014.04/547,324.40
  6. Step 6: Final answer
    x = 673,364.10

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Similar ratio
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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.