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Finding the Fourth Proportional to 426,752,855.10, 640,607,579.55 and 330,136,881.30

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Solution

The fourth proportional to 426,752,855.10, 640,607,579.55 and 330,136,881.30 is: 495,575,333.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,752,855.10 : 640,607,579.55 = 330,136,881.30 : x
  2. Step 2: Convert to fraction form
    426,752,855.10/640,607,579.55 = 330,136,881.30/x
  3. Step 3: Cross multiply
    426,752,855.10x = 640,607,579.55 × 330,136,881.30
  4. Step 4: Simplify right side
    426,752,855.10x = 211,488,188,449,778,656
  5. Step 5: Solve for x
    x = 211,488,188,449,778,656/426,752,855.10
  6. Step 6: Final answer
    x = 495,575,333.41

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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.