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Finding the Fourth Proportional to 472,393,153.80, 708,589,730.70 and 298,930,811.40

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Solution

The fourth proportional to 472,393,153.80, 708,589,730.70 and 298,930,811.40 is: 448,396,217.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,393,153.80 : 708,589,730.70 = 298,930,811.40 : x
  2. Step 2: Convert to fraction form
    472,393,153.80/708,589,730.70 = 298,930,811.40/x
  3. Step 3: Cross multiply
    472,393,153.80x = 708,589,730.70 × 298,930,811.40
  4. Step 4: Simplify right side
    472,393,153.80x = 211,819,303,147,858,496
  5. Step 5: Solve for x
    x = 211,819,303,147,858,496/472,393,153.80
  6. Step 6: Final answer
    x = 448,396,217.10

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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.