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Finding the Fourth Proportional to 452,472.40, 678,708.60 and 300,913.30

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Solution

The fourth proportional to 452,472.40, 678,708.60 and 300,913.30 is: 451,369.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,472.40 : 678,708.60 = 300,913.30 : x
  2. Step 2: Convert to fraction form
    452,472.40/678,708.60 = 300,913.30/x
  3. Step 3: Cross multiply
    452,472.40x = 678,708.60 × 300,913.30
  4. Step 4: Simplify right side
    452,472.40x = 204,232,444,564.38
  5. Step 5: Solve for x
    x = 204,232,444,564.38/452,472.40
  6. Step 6: Final answer
    x = 451,369.95

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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.