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Finding the Fourth Proportional to 645,167.80, 967,751.70 and 433,660.60

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Solution

The fourth proportional to 645,167.80, 967,751.70 and 433,660.60 is: 650,490.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,167.80 : 967,751.70 = 433,660.60 : x
  2. Step 2: Convert to fraction form
    645,167.80/967,751.70 = 433,660.60/x
  3. Step 3: Cross multiply
    645,167.80x = 967,751.70 × 433,660.60
  4. Step 4: Simplify right side
    645,167.80x = 419,675,782,873.02
  5. Step 5: Solve for x
    x = 419,675,782,873.02/645,167.80
  6. Step 6: Final answer
    x = 650,490.90

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Double scale
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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.