Home / 390,522,901,834.36-585,859,790,172.30-148,481,192,693.21

Finding the Fourth Proportional to 390,522,901,834.36, 585,859,790,172.30 and 148,481,192,693.21

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Solution

The fourth proportional to 390,522,901,834.36, 585,859,790,172.30 and 148,481,192,693.21 is: 222,750,471,194.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,522,901,834.36 : 585,859,790,172.30 = 148,481,192,693.21 : x
  2. Step 2: Convert to fraction form
    390,522,901,834.36/585,859,790,172.30 = 148,481,192,693.21/x
  3. Step 3: Cross multiply
    390,522,901,834.36x = 585,859,790,172.30 × 148,481,192,693.21
  4. Step 4: Simplify right side
    390,522,901,834.36x = 86,989,160,395,776,855,113,728
  5. Step 5: Solve for x
    x = 86,989,160,395,776,855,113,728/390,522,901,834.36
  6. Step 6: Final answer
    x = 222,750,471,194.32

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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.