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Finding the Fourth Proportional to 615,094.70, 921,864.45 and 548,221.10

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Solution

The fourth proportional to 615,094.70, 921,864.45 and 548,221.10 is: 821,638.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,094.70 : 921,864.45 = 548,221.10 : x
  2. Step 2: Convert to fraction form
    615,094.70/921,864.45 = 548,221.10/x
  3. Step 3: Cross multiply
    615,094.70x = 921,864.45 × 548,221.10
  4. Step 4: Simplify right side
    615,094.70x = 505,385,542,829.90
  5. Step 5: Solve for x
    x = 505,385,542,829.90/615,094.70
  6. Step 6: Final answer
    x = 821,638.59

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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.