Home / 445,808,422.80-668,145,763.80-215,281,126.80

Finding the Fourth Proportional to 445,808,422.80, 668,145,763.80 and 215,281,126.80

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Solution

The fourth proportional to 445,808,422.80, 668,145,763.80 and 215,281,126.80 is: 322,647,948.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,808,422.80 : 668,145,763.80 = 215,281,126.80 : x
  2. Step 2: Convert to fraction form
    445,808,422.80/668,145,763.80 = 215,281,126.80/x
  3. Step 3: Cross multiply
    445,808,422.80x = 668,145,763.80 × 215,281,126.80
  4. Step 4: Simplify right side
    445,808,422.80x = 143,839,172,897,510,640
  5. Step 5: Solve for x
    x = 143,839,172,897,510,640/445,808,422.80
  6. Step 6: Final answer
    x = 322,647,948.18

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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.