Home / 990,500.40-1,485,750.60-636,206.40

Finding the Fourth Proportional to 990,500.40, 1,485,750.60 and 636,206.40

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Solution

The fourth proportional to 990,500.40, 1,485,750.60 and 636,206.40 is: 954,309.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,500.40 : 1,485,750.60 = 636,206.40 : x
  2. Step 2: Convert to fraction form
    990,500.40/1,485,750.60 = 636,206.40/x
  3. Step 3: Cross multiply
    990,500.40x = 1,485,750.60 × 636,206.40
  4. Step 4: Simplify right side
    990,500.40x = 945,244,040,523.84
  5. Step 5: Solve for x
    x = 945,244,040,523.84/990,500.40
  6. Step 6: Final answer
    x = 954,309.60

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Similar ratio
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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.