Home / 426,752,885.10-640,607,624.55-330,136,911.30

Finding the Fourth Proportional to 426,752,885.10, 640,607,624.55 and 330,136,911.30

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Solution

The fourth proportional to 426,752,885.10, 640,607,624.55 and 330,136,911.30 is: 495,575,378.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,752,885.10 : 640,607,624.55 = 330,136,911.30 : x
  2. Step 2: Convert to fraction form
    426,752,885.10/640,607,624.55 = 330,136,911.30/x
  3. Step 3: Cross multiply
    426,752,885.10x = 640,607,624.55 × 330,136,911.30
  4. Step 4: Simplify right side
    426,752,885.10x = 211,488,222,524,167,040
  5. Step 5: Solve for x
    x = 211,488,222,524,167,040/426,752,885.10
  6. Step 6: Final answer
    x = 495,575,378.42

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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.