Home / 820,824.60-1,230,200.10-399,192.60

Finding the Fourth Proportional to 820,824.60, 1,230,200.10 and 399,192.60

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Solution

The fourth proportional to 820,824.60, 1,230,200.10 and 399,192.60 is: 598,284.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,824.60 : 1,230,200.10 = 399,192.60 : x
  2. Step 2: Convert to fraction form
    820,824.60/1,230,200.10 = 399,192.60/x
  3. Step 3: Cross multiply
    820,824.60x = 1,230,200.10 × 399,192.60
  4. Step 4: Simplify right side
    820,824.60x = 491,086,776,439.26
  5. Step 5: Solve for x
    x = 491,086,776,439.26/820,824.60
  6. Step 6: Final answer
    x = 598,284.67

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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.