Home / 990,031.20-1,485,046.80-492,367.20

Finding the Fourth Proportional to 990,031.20, 1,485,046.80 and 492,367.20

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Solution

The fourth proportional to 990,031.20, 1,485,046.80 and 492,367.20 is: 738,550.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,031.20 : 1,485,046.80 = 492,367.20 : x
  2. Step 2: Convert to fraction form
    990,031.20/1,485,046.80 = 492,367.20/x
  3. Step 3: Cross multiply
    990,031.20x = 1,485,046.80 × 492,367.20
  4. Step 4: Simplify right side
    990,031.20x = 731,188,334,784.96
  5. Step 5: Solve for x
    x = 731,188,334,784.96/990,031.20
  6. Step 6: Final answer
    x = 738,550.80

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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.