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Finding the Fourth Proportional to 447,087.20, 670,630.80 and 397,320.80

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Solution

The fourth proportional to 447,087.20, 670,630.80 and 397,320.80 is: 595,981.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,087.20 : 670,630.80 = 397,320.80 : x
  2. Step 2: Convert to fraction form
    447,087.20/670,630.80 = 397,320.80/x
  3. Step 3: Cross multiply
    447,087.20x = 670,630.80 × 397,320.80
  4. Step 4: Simplify right side
    447,087.20x = 266,455,565,960.64
  5. Step 5: Solve for x
    x = 266,455,565,960.64/447,087.20
  6. Step 6: Final answer
    x = 595,981.20

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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.