Home / 990,825,824.85-1,486,238,737.28-408,260,200.65

Finding the Fourth Proportional to 990,825,824.85, 1,486,238,737.28 and 408,260,200.65

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Solution

The fourth proportional to 990,825,824.85, 1,486,238,737.28 and 408,260,200.65 is: 612,390,300.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,825,824.85 : 1,486,238,737.28 = 408,260,200.65 : x
  2. Step 2: Convert to fraction form
    990,825,824.85/1,486,238,737.28 = 408,260,200.65/x
  3. Step 3: Cross multiply
    990,825,824.85x = 1,486,238,737.28 × 408,260,200.65
  4. Step 4: Simplify right side
    990,825,824.85x = 606,772,125,093,694,080
  5. Step 5: Solve for x
    x = 606,772,125,093,694,080/990,825,824.85
  6. Step 6: Final answer
    x = 612,390,300.98

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Double scale
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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.