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Finding the Fourth Proportional to 547,370.90, 821,056.35 and 396,905.30

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Solution

The fourth proportional to 547,370.90, 821,056.35 and 396,905.30 is: 595,357.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,370.90 : 821,056.35 = 396,905.30 : x
  2. Step 2: Convert to fraction form
    547,370.90/821,056.35 = 396,905.30/x
  3. Step 3: Cross multiply
    547,370.90x = 821,056.35 × 396,905.30
  4. Step 4: Simplify right side
    547,370.90x = 325,881,616,913.66
  5. Step 5: Solve for x
    x = 325,881,616,913.66/547,370.90
  6. Step 6: Final answer
    x = 595,357.95

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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.