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Finding the Fourth Proportional to 554,168.70, 764,737.44 and 312,449.16

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Solution

The fourth proportional to 554,168.70, 764,737.44 and 312,449.16 is: 431,171.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,168.70 : 764,737.44 = 312,449.16 : x
  2. Step 2: Convert to fraction form
    554,168.70/764,737.44 = 312,449.16/x
  3. Step 3: Cross multiply
    554,168.70x = 764,737.44 × 312,449.16
  4. Step 4: Simplify right side
    554,168.70x = 238,941,570,748.55
  5. Step 5: Solve for x
    x = 238,941,570,748.55/554,168.70
  6. Step 6: Final answer
    x = 431,171.18

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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.