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Finding the Fourth Proportional to 553,782.80, 764,189.16 and 327,501.20

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Solution

The fourth proportional to 553,782.80, 764,189.16 and 327,501.20 is: 451,933.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,782.80 : 764,189.16 = 327,501.20 : x
  2. Step 2: Convert to fraction form
    553,782.80/764,189.16 = 327,501.20/x
  3. Step 3: Cross multiply
    553,782.80x = 764,189.16 × 327,501.20
  4. Step 4: Simplify right side
    553,782.80x = 250,272,866,926.99
  5. Step 5: Solve for x
    x = 250,272,866,926.99/553,782.80
  6. Step 6: Final answer
    x = 451,933.26

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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.