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Finding the Fourth Proportional to 655,759,747.80, 904,946,914.87 and 373,502,134.31

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Solution

The fourth proportional to 655,759,747.80, 904,946,914.87 and 373,502,134.31 is: 515,432,069.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,759,747.80 : 904,946,914.87 = 373,502,134.31 : x
  2. Step 2: Convert to fraction form
    655,759,747.80/904,946,914.87 = 373,502,134.31/x
  3. Step 3: Cross multiply
    655,759,747.80x = 904,946,914.87 × 373,502,134.31
  4. Step 4: Simplify right side
    655,759,747.80x = 337,999,604,135,736,384
  5. Step 5: Solve for x
    x = 337,999,604,135,736,384/655,759,747.80
  6. Step 6: Final answer
    x = 515,432,069.85

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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.