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Finding the Fourth Proportional to 611,404.20, 916,328.70 and 544,530.60

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Solution

The fourth proportional to 611,404.20, 916,328.70 and 544,530.60 is: 816,103.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,404.20 : 916,328.70 = 544,530.60 : x
  2. Step 2: Convert to fraction form
    611,404.20/916,328.70 = 544,530.60/x
  3. Step 3: Cross multiply
    611,404.20x = 916,328.70 × 544,530.60
  4. Step 4: Simplify right side
    611,404.20x = 498,969,016,808.22
  5. Step 5: Solve for x
    x = 498,969,016,808.22/611,404.20
  6. Step 6: Final answer
    x = 816,103.35

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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.