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Finding the Fourth Proportional to 553,653.20, 764,028.78 and 338,792.60

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Solution

The fourth proportional to 553,653.20, 764,028.78 and 338,792.60 is: 467,526.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,653.20 : 764,028.78 = 338,792.60 : x
  2. Step 2: Convert to fraction form
    553,653.20/764,028.78 = 338,792.60/x
  3. Step 3: Cross multiply
    553,653.20x = 764,028.78 × 338,792.60
  4. Step 4: Simplify right side
    553,653.20x = 258,847,296,851.03
  5. Step 5: Solve for x
    x = 258,847,296,851.03/553,653.20
  6. Step 6: Final answer
    x = 467,526.06

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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.