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Finding the Fourth Proportional to 606,644.20, 909,966.30 and 438,682.60

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Solution

The fourth proportional to 606,644.20, 909,966.30 and 438,682.60 is: 658,023.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,644.20 : 909,966.30 = 438,682.60 : x
  2. Step 2: Convert to fraction form
    606,644.20/909,966.30 = 438,682.60/x
  3. Step 3: Cross multiply
    606,644.20x = 909,966.30 × 438,682.60
  4. Step 4: Simplify right side
    606,644.20x = 399,186,382,396.38
  5. Step 5: Solve for x
    x = 399,186,382,396.38/606,644.20
  6. Step 6: Final answer
    x = 658,023.90

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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.