Home / 678,456.69-1,017,688.55-397,777.11

Finding the Fourth Proportional to 678,456.69, 1,017,688.55 and 397,777.11

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Solution

The fourth proportional to 678,456.69, 1,017,688.55 and 397,777.11 is: 596,667.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,456.69 : 1,017,688.55 = 397,777.11 : x
  2. Step 2: Convert to fraction form
    678,456.69/1,017,688.55 = 397,777.11/x
  3. Step 3: Cross multiply
    678,456.69x = 1,017,688.55 × 397,777.11
  4. Step 4: Simplify right side
    678,456.69x = 404,813,208,310.21
  5. Step 5: Solve for x
    x = 404,813,208,310.21/678,456.69
  6. Step 6: Final answer
    x = 596,667.72

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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.