Home / 479,015,198.40-661,037,123.43-278,090,716.44

Finding the Fourth Proportional to 479,015,198.40, 661,037,123.43 and 278,090,716.44

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Solution

The fourth proportional to 479,015,198.40, 661,037,123.43 and 278,090,716.44 is: 383,762,953.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,015,198.40 : 661,037,123.43 = 278,090,716.44 : x
  2. Step 2: Convert to fraction form
    479,015,198.40/661,037,123.43 = 278,090,716.44/x
  3. Step 3: Cross multiply
    479,015,198.40x = 661,037,123.43 × 278,090,716.44
  4. Step 4: Simplify right side
    479,015,198.40x = 183,828,287,248,085,408
  5. Step 5: Solve for x
    x = 183,828,287,248,085,408/479,015,198.40
  6. Step 6: Final answer
    x = 383,762,953.37

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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.