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Finding the Fourth Proportional to 404,485,404.85, 606,728,107.28 and 400,454,326.45

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Solution

The fourth proportional to 404,485,404.85, 606,728,107.28 and 400,454,326.45 is: 600,681,489.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,485,404.85 : 606,728,107.28 = 400,454,326.45 : x
  2. Step 2: Convert to fraction form
    404,485,404.85/606,728,107.28 = 400,454,326.45/x
  3. Step 3: Cross multiply
    404,485,404.85x = 606,728,107.28 × 400,454,326.45
  4. Step 4: Simplify right side
    404,485,404.85x = 242,966,895,537,093,440
  5. Step 5: Solve for x
    x = 242,966,895,537,093,440/404,485,404.85
  6. Step 6: Final answer
    x = 600,681,489.68

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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.