Home / 678,318.86-1,017,478.31-257,594.73

Finding the Fourth Proportional to 678,318.86, 1,017,478.31 and 257,594.73

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Solution

The fourth proportional to 678,318.86, 1,017,478.31 and 257,594.73 is: 386,392.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,318.86 : 1,017,478.31 = 257,594.73 : x
  2. Step 2: Convert to fraction form
    678,318.86/1,017,478.31 = 257,594.73/x
  3. Step 3: Cross multiply
    678,318.86x = 1,017,478.31 × 257,594.73
  4. Step 4: Simplify right side
    678,318.86x = 262,097,049,257.33
  5. Step 5: Solve for x
    x = 262,097,049,257.33/678,318.86
  6. Step 6: Final answer
    x = 386,392.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.