Home / 787,328,986.60-1,180,993,479.90-378,286,503.40

Finding the Fourth Proportional to 787,328,986.60, 1,180,993,479.90 and 378,286,503.40

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Solution

The fourth proportional to 787,328,986.60, 1,180,993,479.90 and 378,286,503.40 is: 567,429,755.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,328,986.60 : 1,180,993,479.90 = 378,286,503.40 : x
  2. Step 2: Convert to fraction form
    787,328,986.60/1,180,993,479.90 = 378,286,503.40/x
  3. Step 3: Cross multiply
    787,328,986.60x = 1,180,993,479.90 × 378,286,503.40
  4. Step 4: Simplify right side
    787,328,986.60x = 446,753,894,049,569,216
  5. Step 5: Solve for x
    x = 446,753,894,049,569,216/787,328,986.60
  6. Step 6: Final answer
    x = 567,429,755.10

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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.