Home / 990,470.80-1,485,706.20-242,516.80

Finding the Fourth Proportional to 990,470.80, 1,485,706.20 and 242,516.80

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Solution

The fourth proportional to 990,470.80, 1,485,706.20 and 242,516.80 is: 363,775.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,470.80 : 1,485,706.20 = 242,516.80 : x
  2. Step 2: Convert to fraction form
    990,470.80/1,485,706.20 = 242,516.80/x
  3. Step 3: Cross multiply
    990,470.80x = 1,485,706.20 × 242,516.80
  4. Step 4: Simplify right side
    990,470.80x = 360,308,713,364.16
  5. Step 5: Solve for x
    x = 360,308,713,364.16/990,470.80
  6. Step 6: Final answer
    x = 363,775.20

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Double scale
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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.