Home / 678,915.92-1,016,822.64-324,178.40

Finding the Fourth Proportional to 678,915.92, 1,016,822.64 and 324,178.40

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Solution

The fourth proportional to 678,915.92, 1,016,822.64 and 324,178.40 is: 485,526.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,915.92 : 1,016,822.64 = 324,178.40 : x
  2. Step 2: Convert to fraction form
    678,915.92/1,016,822.64 = 324,178.40/x
  3. Step 3: Cross multiply
    678,915.92x = 1,016,822.64 × 324,178.40
  4. Step 4: Simplify right side
    678,915.92x = 329,631,936,518.98
  5. Step 5: Solve for x
    x = 329,631,936,518.98/678,915.92
  6. Step 6: Final answer
    x = 485,526.89

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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.