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Finding the Fourth Proportional to 605,627.10, 909,424.80 and 438,321.60

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Solution

The fourth proportional to 605,627.10, 909,424.80 and 438,321.60 is: 658,194.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,627.10 : 909,424.80 = 438,321.60 : x
  2. Step 2: Convert to fraction form
    605,627.10/909,424.80 = 438,321.60/x
  3. Step 3: Cross multiply
    605,627.10x = 909,424.80 × 438,321.60
  4. Step 4: Simplify right side
    605,627.10x = 398,620,533,415.68
  5. Step 5: Solve for x
    x = 398,620,533,415.68/605,627.10
  6. Step 6: Final answer
    x = 658,194.68

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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.