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Finding the Fourth Proportional to 626,893,278.80, 940,339,918.20 and 454,004,805.20

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Solution

The fourth proportional to 626,893,278.80, 940,339,918.20 and 454,004,805.20 is: 681,007,207.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,893,278.80 : 940,339,918.20 = 454,004,805.20 : x
  2. Step 2: Convert to fraction form
    626,893,278.80/940,339,918.20 = 454,004,805.20/x
  3. Step 3: Cross multiply
    626,893,278.80x = 940,339,918.20 × 454,004,805.20
  4. Step 4: Simplify right side
    626,893,278.80x = 426,918,841,384,174,976
  5. Step 5: Solve for x
    x = 426,918,841,384,174,976/626,893,278.80
  6. Step 6: Final answer
    x = 681,007,207.80

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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.