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Finding the Fourth Proportional to 547,280.40, 820,920.60 and 448,865.40

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Solution

The fourth proportional to 547,280.40, 820,920.60 and 448,865.40 is: 673,298.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,280.40 : 820,920.60 = 448,865.40 : x
  2. Step 2: Convert to fraction form
    547,280.40/820,920.60 = 448,865.40/x
  3. Step 3: Cross multiply
    547,280.40x = 820,920.60 × 448,865.40
  4. Step 4: Simplify right side
    547,280.40x = 368,482,853,487.24
  5. Step 5: Solve for x
    x = 368,482,853,487.24/547,280.40
  6. Step 6: Final answer
    x = 673,298.10

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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.