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Finding the Fourth Proportional to 447,323.20, 670,984.80 and 289,729.60

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Solution

The fourth proportional to 447,323.20, 670,984.80 and 289,729.60 is: 434,594.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,323.20 : 670,984.80 = 289,729.60 : x
  2. Step 2: Convert to fraction form
    447,323.20/670,984.80 = 289,729.60/x
  3. Step 3: Cross multiply
    447,323.20x = 670,984.80 × 289,729.60
  4. Step 4: Simplify right side
    447,323.20x = 194,404,157,710.08
  5. Step 5: Solve for x
    x = 194,404,157,710.08/447,323.20
  6. Step 6: Final answer
    x = 434,594.40

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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.