Home / 668,115,941.79-1,000,988,208.75-279,082,627.77

Finding the Fourth Proportional to 668,115,941.79, 1,000,988,208.75 and 279,082,627.77

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Solution

The fourth proportional to 668,115,941.79, 1,000,988,208.75 and 279,082,627.77 is: 418,128,654.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,115,941.79 : 1,000,988,208.75 = 279,082,627.77 : x
  2. Step 2: Convert to fraction form
    668,115,941.79/1,000,988,208.75 = 279,082,627.77/x
  3. Step 3: Cross multiply
    668,115,941.79x = 1,000,988,208.75 × 279,082,627.77
  4. Step 4: Simplify right side
    668,115,941.79x = 279,358,419,664,735,296
  5. Step 5: Solve for x
    x = 279,358,419,664,735,296/668,115,941.79
  6. Step 6: Final answer
    x = 418,128,654.31

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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.