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Finding the Fourth Proportional to 605,625.60, 909,422.55 and 438,320.10

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Solution

The fourth proportional to 605,625.60, 909,422.55 and 438,320.10 is: 658,192.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,625.60 : 909,422.55 = 438,320.10 : x
  2. Step 2: Convert to fraction form
    605,625.60/909,422.55 = 438,320.10/x
  3. Step 3: Cross multiply
    605,625.60x = 909,422.55 × 438,320.10
  4. Step 4: Simplify right side
    605,625.60x = 398,618,183,058.26
  5. Step 5: Solve for x
    x = 398,618,183,058.26/605,625.60
  6. Step 6: Final answer
    x = 658,192.43

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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.