Home / 554,240.42-764,786.78-312,508.60

Finding the Fourth Proportional to 554,240.42, 764,786.78 and 312,508.60

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Solution

The fourth proportional to 554,240.42, 764,786.78 and 312,508.60 is: 431,225.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,240.42 : 764,786.78 = 312,508.60 : x
  2. Step 2: Convert to fraction form
    554,240.42/764,786.78 = 312,508.60/x
  3. Step 3: Cross multiply
    554,240.42x = 764,786.78 × 312,508.60
  4. Step 4: Simplify right side
    554,240.42x = 239,002,445,916.31
  5. Step 5: Solve for x
    x = 239,002,445,916.31/554,240.42
  6. Step 6: Final answer
    x = 431,225.22

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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.