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Finding the Fourth Proportional to 654,328,621.73, 902,976,426.82 and 356,969,962.78

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Solution

The fourth proportional to 654,328,621.73, 902,976,426.82 and 356,969,962.78 is: 492,620,146.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,328,621.73 : 902,976,426.82 = 356,969,962.78 : x
  2. Step 2: Convert to fraction form
    654,328,621.73/902,976,426.82 = 356,969,962.78/x
  3. Step 3: Cross multiply
    654,328,621.73x = 902,976,426.82 × 356,969,962.78
  4. Step 4: Simplify right side
    654,328,621.73x = 322,335,461,471,337,984
  5. Step 5: Solve for x
    x = 322,335,461,471,337,984/654,328,621.73
  6. Step 6: Final answer
    x = 492,620,146.46

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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.