Home / 990,825,825.85-1,486,238,738.78-408,260,201.65

Finding the Fourth Proportional to 990,825,825.85, 1,486,238,738.78 and 408,260,201.65

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Solution

The fourth proportional to 990,825,825.85, 1,486,238,738.78 and 408,260,201.65 is: 612,390,302.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,825,825.85 : 1,486,238,738.78 = 408,260,201.65 : x
  2. Step 2: Convert to fraction form
    990,825,825.85/1,486,238,738.78 = 408,260,201.65/x
  3. Step 3: Cross multiply
    990,825,825.85x = 1,486,238,738.78 × 408,260,201.65
  4. Step 4: Simplify right side
    990,825,825.85x = 606,772,127,194,364,416
  5. Step 5: Solve for x
    x = 606,772,127,194,364,416/990,825,825.85
  6. Step 6: Final answer
    x = 612,390,302.48

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Double scale
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Similar ratio
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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.