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Finding the Fourth Proportional to 655,778,957.40, 983,778,660.90 and 195,763,627.80

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Solution

The fourth proportional to 655,778,957.40, 983,778,660.90 and 195,763,627.80 is: 293,678,346.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,778,957.40 : 983,778,660.90 = 195,763,627.80 : x
  2. Step 2: Convert to fraction form
    655,778,957.40/983,778,660.90 = 195,763,627.80/x
  3. Step 3: Cross multiply
    655,778,957.40x = 983,778,660.90 × 195,763,627.80
  4. Step 4: Simplify right side
    655,778,957.40x = 192,588,079,610,010,016
  5. Step 5: Solve for x
    x = 192,588,079,610,010,016/655,778,957.40
  6. Step 6: Final answer
    x = 293,678,346.09

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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.