Home / 810,524,910.63-1,215,814,279.23-278,731,117.37

Finding the Fourth Proportional to 810,524,910.63, 1,215,814,279.23 and 278,731,117.37

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Solution

The fourth proportional to 810,524,910.63, 1,215,814,279.23 and 278,731,117.37 is: 418,105,931.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,524,910.63 : 1,215,814,279.23 = 278,731,117.37 : x
  2. Step 2: Convert to fraction form
    810,524,910.63/1,215,814,279.23 = 278,731,117.37/x
  3. Step 3: Cross multiply
    810,524,910.63x = 1,215,814,279.23 × 278,731,117.37
  4. Step 4: Simplify right side
    810,524,910.63x = 338,885,272,558,100,032
  5. Step 5: Solve for x
    x = 338,885,272,558,100,032/810,524,910.63
  6. Step 6: Final answer
    x = 418,105,931.25

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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.