Home / 445,905,024.80-668,857,537.20-405,728,085.20

Finding the Fourth Proportional to 445,905,024.80, 668,857,537.20 and 405,728,085.20

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Solution

The fourth proportional to 445,905,024.80, 668,857,537.20 and 405,728,085.20 is: 608,592,127.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,905,024.80 : 668,857,537.20 = 405,728,085.20 : x
  2. Step 2: Convert to fraction form
    445,905,024.80/668,857,537.20 = 405,728,085.20/x
  3. Step 3: Cross multiply
    445,905,024.80x = 668,857,537.20 × 405,728,085.20
  4. Step 4: Simplify right side
    445,905,024.80x = 271,374,287,839,743,776
  5. Step 5: Solve for x
    x = 271,374,287,839,743,776/445,905,024.80
  6. Step 6: Final answer
    x = 608,592,127.80

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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.