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Finding the Fourth Proportional to 399,169,969.90, 598,754,954.85 and 399,169,969.90

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Solution

The fourth proportional to 399,169,969.90, 598,754,954.85 and 399,169,969.90 is: 598,754,954.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,169,969.90 : 598,754,954.85 = 399,169,969.90 : x
  2. Step 2: Convert to fraction form
    399,169,969.90/598,754,954.85 = 399,169,969.90/x
  3. Step 3: Cross multiply
    399,169,969.90x = 598,754,954.85 × 399,169,969.90
  4. Step 4: Simplify right side
    399,169,969.90x = 239,004,997,304,950,368
  5. Step 5: Solve for x
    x = 239,004,997,304,950,368/399,169,969.90
  6. Step 6: Final answer
    x = 598,754,954.85

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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.