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Finding the Fourth Proportional to 667,013.01, 920,478.24 and 361,089.38

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Solution

The fourth proportional to 667,013.01, 920,478.24 and 361,089.38 is: 498,303.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,013.01 : 920,478.24 = 361,089.38 : x
  2. Step 2: Convert to fraction form
    667,013.01/920,478.24 = 361,089.38/x
  3. Step 3: Cross multiply
    667,013.01x = 920,478.24 × 361,089.38
  4. Step 4: Simplify right side
    667,013.01x = 332,374,918,270.72
  5. Step 5: Solve for x
    x = 332,374,918,270.72/667,013.01
  6. Step 6: Final answer
    x = 498,303.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.