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Finding the Fourth Proportional to 653,503,319.80, 978,911,286.90 and 449,262,014.20

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Solution

The fourth proportional to 653,503,319.80, 978,911,286.90 and 449,262,014.20 is: 672,969,276.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,503,319.80 : 978,911,286.90 = 449,262,014.20 : x
  2. Step 2: Convert to fraction form
    653,503,319.80/978,911,286.90 = 449,262,014.20/x
  3. Step 3: Cross multiply
    653,503,319.80x = 978,911,286.90 × 449,262,014.20
  4. Step 4: Simplify right side
    653,503,319.80x = 439,787,656,475,808,064
  5. Step 5: Solve for x
    x = 439,787,656,475,808,064/653,503,319.80
  6. Step 6: Final answer
    x = 672,969,276.74

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.