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Finding the Fourth Proportional to 667,461.90, 1,001,520.90 and 312,414.60

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Solution

The fourth proportional to 667,461.90, 1,001,520.90 and 312,414.60 is: 468,775.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,461.90 : 1,001,520.90 = 312,414.60 : x
  2. Step 2: Convert to fraction form
    667,461.90/1,001,520.90 = 312,414.60/x
  3. Step 3: Cross multiply
    667,461.90x = 1,001,520.90 × 312,414.60
  4. Step 4: Simplify right side
    667,461.90x = 312,889,751,365.14
  5. Step 5: Solve for x
    x = 312,889,751,365.14/667,461.90
  6. Step 6: Final answer
    x = 468,775.45

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1.5x scale

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.