Home / 678,496.59-1,017,589.41-405,020.07

Finding the Fourth Proportional to 678,496.59, 1,017,589.41 and 405,020.07

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Solution

The fourth proportional to 678,496.59, 1,017,589.41 and 405,020.07 is: 607,437.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,496.59 : 1,017,589.41 = 405,020.07 : x
  2. Step 2: Convert to fraction form
    678,496.59/1,017,589.41 = 405,020.07/x
  3. Step 3: Cross multiply
    678,496.59x = 1,017,589.41 × 405,020.07
  4. Step 4: Simplify right side
    678,496.59x = 412,144,134,069.46
  5. Step 5: Solve for x
    x = 412,144,134,069.46/678,496.59
  6. Step 6: Final answer
    x = 607,437.30

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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.