Home / 678,741.90-1,016,562.81-324,005.03

Finding the Fourth Proportional to 678,741.90, 1,016,562.81 and 324,005.03

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Solution

The fourth proportional to 678,741.90, 1,016,562.81 and 324,005.03 is: 485,267.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,741.90 : 1,016,562.81 = 324,005.03 : x
  2. Step 2: Convert to fraction form
    678,741.90/1,016,562.81 = 324,005.03/x
  3. Step 3: Cross multiply
    678,741.90x = 1,016,562.81 × 324,005.03
  4. Step 4: Simplify right side
    678,741.90x = 329,371,461,872.72
  5. Step 5: Solve for x
    x = 329,371,461,872.72/678,741.90
  6. Step 6: Final answer
    x = 485,267.62

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1.5x scale

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.