Home / 687,826,107.24-949,175,092.82-420,349,428.48

Finding the Fourth Proportional to 687,826,107.24, 949,175,092.82 and 420,349,428.48

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Solution

The fourth proportional to 687,826,107.24, 949,175,092.82 and 420,349,428.48 is: 580,066,972.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,826,107.24 : 949,175,092.82 = 420,349,428.48 : x
  2. Step 2: Convert to fraction form
    687,826,107.24/949,175,092.82 = 420,349,428.48/x
  3. Step 3: Cross multiply
    687,826,107.24x = 949,175,092.82 × 420,349,428.48
  4. Step 4: Simplify right side
    687,826,107.24x = 398,985,207,794,337,984
  5. Step 5: Solve for x
    x = 398,985,207,794,337,984/687,826,107.24
  6. Step 6: Final answer
    x = 580,066,972.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.