Home / 509,420.40-762,316.20-443,583.60

Finding the Fourth Proportional to 509,420.40, 762,316.20 and 443,583.60

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Solution

The fourth proportional to 509,420.40, 762,316.20 and 443,583.60 is: 663,795.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,420.40 : 762,316.20 = 443,583.60 : x
  2. Step 2: Convert to fraction form
    509,420.40/762,316.20 = 443,583.60/x
  3. Step 3: Cross multiply
    509,420.40x = 762,316.20 × 443,583.60
  4. Step 4: Simplify right side
    509,420.40x = 338,150,964,334.32
  5. Step 5: Solve for x
    x = 338,150,964,334.32/509,420.40
  6. Step 6: Final answer
    x = 663,795.49

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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.