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Finding the Fourth Proportional to 452,962.80, 678,666.60 and 215,794.80

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Solution

The fourth proportional to 452,962.80, 678,666.60 and 215,794.80 is: 323,321.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,962.80 : 678,666.60 = 215,794.80 : x
  2. Step 2: Convert to fraction form
    452,962.80/678,666.60 = 215,794.80/x
  3. Step 3: Cross multiply
    452,962.80x = 678,666.60 × 215,794.80
  4. Step 4: Simplify right side
    452,962.80x = 146,452,723,213.68
  5. Step 5: Solve for x
    x = 146,452,723,213.68/452,962.80
  6. Step 6: Final answer
    x = 323,321.75

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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.