Home / 643,131,337.88-887,521,684.02-360,834,808.88

Finding the Fourth Proportional to 643,131,337.88, 887,521,684.02 and 360,834,808.88

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Solution

The fourth proportional to 643,131,337.88, 887,521,684.02 and 360,834,808.88 is: 497,952,281.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,131,337.88 : 887,521,684.02 = 360,834,808.88 : x
  2. Step 2: Convert to fraction form
    643,131,337.88/887,521,684.02 = 360,834,808.88/x
  3. Step 3: Cross multiply
    643,131,337.88x = 887,521,684.02 × 360,834,808.88
  4. Step 4: Simplify right side
    643,131,337.88x = 320,248,717,230,212,416
  5. Step 5: Solve for x
    x = 320,248,717,230,212,416/643,131,337.88
  6. Step 6: Final answer
    x = 497,952,281.86

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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.