Home / 442,573,431.60-663,860,147.40-212,990,919.60

Finding the Fourth Proportional to 442,573,431.60, 663,860,147.40 and 212,990,919.60

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Solution

The fourth proportional to 442,573,431.60, 663,860,147.40 and 212,990,919.60 is: 319,486,379.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,573,431.60 : 663,860,147.40 = 212,990,919.60 : x
  2. Step 2: Convert to fraction form
    442,573,431.60/663,860,147.40 = 212,990,919.60/x
  3. Step 3: Cross multiply
    442,573,431.60x = 663,860,147.40 × 212,990,919.60
  4. Step 4: Simplify right side
    442,573,431.60x = 141,396,183,280,517,536
  5. Step 5: Solve for x
    x = 141,396,183,280,517,536/442,573,431.60
  6. Step 6: Final answer
    x = 319,486,379.40

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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.