Home / 643,131,462.32-887,521,855.40-360,834,932.88

Finding the Fourth Proportional to 643,131,462.32, 887,521,855.40 and 360,834,932.88

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Solution

The fourth proportional to 643,131,462.32, 887,521,855.40 and 360,834,932.88 is: 497,952,452.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,131,462.32 : 887,521,855.40 = 360,834,932.88 : x
  2. Step 2: Convert to fraction form
    643,131,462.32/887,521,855.40 = 360,834,932.88/x
  3. Step 3: Cross multiply
    643,131,462.32x = 887,521,855.40 × 360,834,932.88
  4. Step 4: Simplify right side
    643,131,462.32x = 320,248,889,122,792,064
  5. Step 5: Solve for x
    x = 320,248,889,122,792,064/643,131,462.32
  6. Step 6: Final answer
    x = 497,952,452.78

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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.