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Finding the Fourth Proportional to 554,181.55, 764,759.73 and 312,459.42

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Solution

The fourth proportional to 554,181.55, 764,759.73 and 312,459.42 is: 431,187.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,181.55 : 764,759.73 = 312,459.42 : x
  2. Step 2: Convert to fraction form
    554,181.55/764,759.73 = 312,459.42/x
  3. Step 3: Cross multiply
    554,181.55x = 764,759.73 × 312,459.42
  4. Step 4: Simplify right side
    554,181.55x = 238,956,383,957.14
  5. Step 5: Solve for x
    x = 238,956,383,957.14/554,181.55
  6. Step 6: Final answer
    x = 431,187.91

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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.