Home / 990,825,840.10-1,486,238,760.15-408,260,215.90

Finding the Fourth Proportional to 990,825,840.10, 1,486,238,760.15 and 408,260,215.90

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Solution

The fourth proportional to 990,825,840.10, 1,486,238,760.15 and 408,260,215.90 is: 612,390,323.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,825,840.10 : 1,486,238,760.15 = 408,260,215.90 : x
  2. Step 2: Convert to fraction form
    990,825,840.10/1,486,238,760.15 = 408,260,215.90/x
  3. Step 3: Cross multiply
    990,825,840.10x = 1,486,238,760.15 × 408,260,215.90
  4. Step 4: Simplify right side
    990,825,840.10x = 606,772,157,097,787,264
  5. Step 5: Solve for x
    x = 606,772,157,097,787,264/990,825,840.10
  6. Step 6: Final answer
    x = 612,390,323.85

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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.