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Finding the Fourth Proportional to 547,276.90, 820,915.35 and 448,861.90

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Solution

The fourth proportional to 547,276.90, 820,915.35 and 448,861.90 is: 673,292.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,276.90 : 820,915.35 = 448,861.90 : x
  2. Step 2: Convert to fraction form
    547,276.90/820,915.35 = 448,861.90/x
  3. Step 3: Cross multiply
    547,276.90x = 820,915.35 × 448,861.90
  4. Step 4: Simplify right side
    547,276.90x = 368,477,623,740.17
  5. Step 5: Solve for x
    x = 368,477,623,740.17/547,276.90
  6. Step 6: Final answer
    x = 673,292.85

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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.