Home / 554,240.42-764,786.79-312,508.59

Finding the Fourth Proportional to 554,240.42, 764,786.79 and 312,508.59

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Solution

The fourth proportional to 554,240.42, 764,786.79 and 312,508.59 is: 431,225.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,240.42 : 764,786.79 = 312,508.59 : x
  2. Step 2: Convert to fraction form
    554,240.42/764,786.79 = 312,508.59/x
  3. Step 3: Cross multiply
    554,240.42x = 764,786.79 × 312,508.59
  4. Step 4: Simplify right side
    554,240.42x = 239,002,441,393.53
  5. Step 5: Solve for x
    x = 239,002,441,393.53/554,240.42
  6. Step 6: Final answer
    x = 431,225.21

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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.