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Finding the Fourth Proportional to 818,801.10, 1,228,201.65 and 286,266.60

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Solution

The fourth proportional to 818,801.10, 1,228,201.65 and 286,266.60 is: 429,399.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,801.10 : 1,228,201.65 = 286,266.60 : x
  2. Step 2: Convert to fraction form
    818,801.10/1,228,201.65 = 286,266.60/x
  3. Step 3: Cross multiply
    818,801.10x = 1,228,201.65 × 286,266.60
  4. Step 4: Simplify right side
    818,801.10x = 351,593,110,459.89
  5. Step 5: Solve for x
    x = 351,593,110,459.89/818,801.10
  6. Step 6: Final answer
    x = 429,399.90

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Similar ratio
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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.