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Finding the Fourth Proportional to 979,440.40, 1,468,469.40 and 447,216.40

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Solution

The fourth proportional to 979,440.40, 1,468,469.40 and 447,216.40 is: 670,509.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    979,440.40 : 1,468,469.40 = 447,216.40 : x
  2. Step 2: Convert to fraction form
    979,440.40/1,468,469.40 = 447,216.40/x
  3. Step 3: Cross multiply
    979,440.40x = 1,468,469.40 × 447,216.40
  4. Step 4: Simplify right side
    979,440.40x = 656,723,598,578.16
  5. Step 5: Solve for x
    x = 656,723,598,578.16/979,440.40
  6. Step 6: Final answer
    x = 670,509.00

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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.