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Finding the Fourth Proportional to 611,478.20, 916,439.70 and 544,604.60

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Solution

The fourth proportional to 611,478.20, 916,439.70 and 544,604.60 is: 816,214.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,478.20 : 916,439.70 = 544,604.60 : x
  2. Step 2: Convert to fraction form
    611,478.20/916,439.70 = 544,604.60/x
  3. Step 3: Cross multiply
    611,478.20x = 916,439.70 × 544,604.60
  4. Step 4: Simplify right side
    611,478.20x = 499,097,276,242.62
  5. Step 5: Solve for x
    x = 499,097,276,242.62/611,478.20
  6. Step 6: Final answer
    x = 816,214.34

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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.