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Finding the Fourth Proportional to 617,646,000.20, 926,469,000.30 and 208,696,245.80

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Solution

The fourth proportional to 617,646,000.20, 926,469,000.30 and 208,696,245.80 is: 313,044,368.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,646,000.20 : 926,469,000.30 = 208,696,245.80 : x
  2. Step 2: Convert to fraction form
    617,646,000.20/926,469,000.30 = 208,696,245.80/x
  3. Step 3: Cross multiply
    617,646,000.20x = 926,469,000.30 × 208,696,245.80
  4. Step 4: Simplify right side
    617,646,000.20x = 193,350,602,212,689,088
  5. Step 5: Solve for x
    x = 193,350,602,212,689,088/617,646,000.20
  6. Step 6: Final answer
    x = 313,044,368.70

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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.