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Finding the Fourth Proportional to 606,286,363.80, 909,429,545.70 and 218,121,857.40

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Solution

The fourth proportional to 606,286,363.80, 909,429,545.70 and 218,121,857.40 is: 327,182,786.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,286,363.80 : 909,429,545.70 = 218,121,857.40 : x
  2. Step 2: Convert to fraction form
    606,286,363.80/909,429,545.70 = 218,121,857.40/x
  3. Step 3: Cross multiply
    606,286,363.80x = 909,429,545.70 × 218,121,857.40
  4. Step 4: Simplify right side
    606,286,363.80x = 198,366,461,682,522,208
  5. Step 5: Solve for x
    x = 198,366,461,682,522,208/606,286,363.80
  6. Step 6: Final answer
    x = 327,182,786.10

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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.