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Finding the Fourth Proportional to 908,801.10, 1,363,201.65 and 309,708.90

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Solution

The fourth proportional to 908,801.10, 1,363,201.65 and 309,708.90 is: 464,563.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    908,801.10 : 1,363,201.65 = 309,708.90 : x
  2. Step 2: Convert to fraction form
    908,801.10/1,363,201.65 = 309,708.90/x
  3. Step 3: Cross multiply
    908,801.10x = 1,363,201.65 × 309,708.90
  4. Step 4: Simplify right side
    908,801.10x = 422,195,683,499.69
  5. Step 5: Solve for x
    x = 422,195,683,499.69/908,801.10
  6. Step 6: Final answer
    x = 464,563.35

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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.