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Finding the Fourth Proportional to 547,069.20, 820,603.80 and 432,907.80

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Solution

The fourth proportional to 547,069.20, 820,603.80 and 432,907.80 is: 649,361.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,069.20 : 820,603.80 = 432,907.80 : x
  2. Step 2: Convert to fraction form
    547,069.20/820,603.80 = 432,907.80/x
  3. Step 3: Cross multiply
    547,069.20x = 820,603.80 × 432,907.80
  4. Step 4: Simplify right side
    547,069.20x = 355,245,785,729.64
  5. Step 5: Solve for x
    x = 355,245,785,729.64/547,069.20
  6. Step 6: Final answer
    x = 649,361.70

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Similar ratio
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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.