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Finding the Fourth Proportional to 554,066.31, 764,578.62 and 321,475.26

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Solution

The fourth proportional to 554,066.31, 764,578.62 and 321,475.26 is: 443,616.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,066.31 : 764,578.62 = 321,475.26 : x
  2. Step 2: Convert to fraction form
    554,066.31/764,578.62 = 321,475.26/x
  3. Step 3: Cross multiply
    554,066.31x = 764,578.62 × 321,475.26
  4. Step 4: Simplify right side
    554,066.31x = 245,793,106,166.83
  5. Step 5: Solve for x
    x = 245,793,106,166.83/554,066.31
  6. Step 6: Final answer
    x = 443,616.77

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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.