Home / 648,463,660.80-972,755,287.20-211,766,633.70

Finding the Fourth Proportional to 648,463,660.80, 972,755,287.20 and 211,766,633.70

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Solution

The fourth proportional to 648,463,660.80, 972,755,287.20 and 211,766,633.70 is: 317,669,477.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,463,660.80 : 972,755,287.20 = 211,766,633.70 : x
  2. Step 2: Convert to fraction form
    648,463,660.80/972,755,287.20 = 211,766,633.70/x
  3. Step 3: Cross multiply
    648,463,660.80x = 972,755,287.20 × 211,766,633.70
  4. Step 4: Simplify right side
    648,463,660.80x = 205,997,112,584,220,704
  5. Step 5: Solve for x
    x = 205,997,112,584,220,704/648,463,660.80
  6. Step 6: Final answer
    x = 317,669,477.93

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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.