Home / 993,988.80-1,491,231.60-320,133.60

Finding the Fourth Proportional to 993,988.80, 1,491,231.60 and 320,133.60

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Solution

The fourth proportional to 993,988.80, 1,491,231.60 and 320,133.60 is: 480,280.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    993,988.80 : 1,491,231.60 = 320,133.60 : x
  2. Step 2: Convert to fraction form
    993,988.80/1,491,231.60 = 320,133.60/x
  3. Step 3: Cross multiply
    993,988.80x = 1,491,231.60 × 320,133.60
  4. Step 4: Simplify right side
    993,988.80x = 477,393,340,541.76
  5. Step 5: Solve for x
    x = 477,393,340,541.76/993,988.80
  6. Step 6: Final answer
    x = 480,280.40

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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.