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Finding the Fourth Proportional to 391,701,455.20, 586,701,877.20 and 323,677,007.20

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Solution

The fourth proportional to 391,701,455.20, 586,701,877.20 and 323,677,007.20 is: 484,812,872.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,701,455.20 : 586,701,877.20 = 323,677,007.20 : x
  2. Step 2: Convert to fraction form
    391,701,455.20/586,701,877.20 = 323,677,007.20/x
  3. Step 3: Cross multiply
    391,701,455.20x = 586,701,877.20 × 323,677,007.20
  4. Step 4: Simplify right side
    391,701,455.20x = 189,901,907,730,717,920
  5. Step 5: Solve for x
    x = 189,901,907,730,717,920/391,701,455.20
  6. Step 6: Final answer
    x = 484,812,872.69

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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.