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Finding the Fourth Proportional to 547,892.10, 821,838.15 and 488,405.70

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Solution

The fourth proportional to 547,892.10, 821,838.15 and 488,405.70 is: 732,608.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,892.10 : 821,838.15 = 488,405.70 : x
  2. Step 2: Convert to fraction form
    547,892.10/821,838.15 = 488,405.70/x
  3. Step 3: Cross multiply
    547,892.10x = 821,838.15 × 488,405.70
  4. Step 4: Simplify right side
    547,892.10x = 401,390,436,937.46
  5. Step 5: Solve for x
    x = 401,390,436,937.46/547,892.10
  6. Step 6: Final answer
    x = 732,608.55

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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.