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Finding the Fourth Proportional to 419,771,636.58, 579,286,870.66 and 231,599,920.98

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Solution

The fourth proportional to 419,771,636.58, 579,286,870.66 and 231,599,920.98 is: 319,609,001.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,771,636.58 : 579,286,870.66 = 231,599,920.98 : x
  2. Step 2: Convert to fraction form
    419,771,636.58/579,286,870.66 = 231,599,920.98/x
  3. Step 3: Cross multiply
    419,771,636.58x = 579,286,870.66 × 231,599,920.98
  4. Step 4: Simplify right side
    419,771,636.58x = 134,162,793,469,607,472
  5. Step 5: Solve for x
    x = 134,162,793,469,607,472/419,771,636.58
  6. Step 6: Final answer
    x = 319,609,001.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.