Home / 671,621.20-1,007,431.80-620,299.60

Finding the Fourth Proportional to 671,621.20, 1,007,431.80 and 620,299.60

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Solution

The fourth proportional to 671,621.20, 1,007,431.80 and 620,299.60 is: 930,449.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,621.20 : 1,007,431.80 = 620,299.60 : x
  2. Step 2: Convert to fraction form
    671,621.20/1,007,431.80 = 620,299.60/x
  3. Step 3: Cross multiply
    671,621.20x = 1,007,431.80 × 620,299.60
  4. Step 4: Simplify right side
    671,621.20x = 624,909,542,567.28
  5. Step 5: Solve for x
    x = 624,909,542,567.28/671,621.20
  6. Step 6: Final answer
    x = 930,449.40

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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.