Home / 693,418,981.77-1,040,486,073.62-324,991,363.53

Finding the Fourth Proportional to 693,418,981.77, 1,040,486,073.62 and 324,991,363.53

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Solution

The fourth proportional to 693,418,981.77, 1,040,486,073.62 and 324,991,363.53 is: 487,654,645.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,418,981.77 : 1,040,486,073.62 = 324,991,363.53 : x
  2. Step 2: Convert to fraction form
    693,418,981.77/1,040,486,073.62 = 324,991,363.53/x
  3. Step 3: Cross multiply
    693,418,981.77x = 1,040,486,073.62 × 324,991,363.53
  4. Step 4: Simplify right side
    693,418,981.77x = 338,148,987,799,739,712
  5. Step 5: Solve for x
    x = 338,148,987,799,739,712/693,418,981.77
  6. Step 6: Final answer
    x = 487,654,645.59

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1.5x scale

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.