Home / 878,115,438.24-1,317,180,340.44-287,897,063.64

Finding the Fourth Proportional to 878,115,438.24, 1,317,180,340.44 and 287,897,063.64

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Solution

The fourth proportional to 878,115,438.24, 1,317,180,340.44 and 287,897,063.64 is: 431,847,950.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,115,438.24 : 1,317,180,340.44 = 287,897,063.64 : x
  2. Step 2: Convert to fraction form
    878,115,438.24/1,317,180,340.44 = 287,897,063.64/x
  3. Step 3: Cross multiply
    878,115,438.24x = 1,317,180,340.44 × 287,897,063.64
  4. Step 4: Simplify right side
    878,115,438.24x = 379,212,352,297,011,520
  5. Step 5: Solve for x
    x = 379,212,352,297,011,520/878,115,438.24
  6. Step 6: Final answer
    x = 431,847,950.49

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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.