Home / 488,790,390.40-734,035,891.20-259,207,878.40

Finding the Fourth Proportional to 488,790,390.40, 734,035,891.20 and 259,207,878.40

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Solution

The fourth proportional to 488,790,390.40, 734,035,891.20 and 259,207,878.40 is: 389,262,738.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,790,390.40 : 734,035,891.20 = 259,207,878.40 : x
  2. Step 2: Convert to fraction form
    488,790,390.40/734,035,891.20 = 259,207,878.40/x
  3. Step 3: Cross multiply
    488,790,390.40x = 734,035,891.20 × 259,207,878.40
  4. Step 4: Simplify right side
    488,790,390.40x = 190,267,886,027,405,248
  5. Step 5: Solve for x
    x = 190,267,886,027,405,248/488,790,390.40
  6. Step 6: Final answer
    x = 389,262,738.72

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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.