Home / 538,289,428.87-807,434,144.39-129,345,579.91

Finding the Fourth Proportional to 538,289,428.87, 807,434,144.39 and 129,345,579.91

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Solution

The fourth proportional to 538,289,428.87, 807,434,144.39 and 129,345,579.91 is: 194,018,370.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,289,428.87 : 807,434,144.39 = 129,345,579.91 : x
  2. Step 2: Convert to fraction form
    538,289,428.87/807,434,144.39 = 129,345,579.91/x
  3. Step 3: Cross multiply
    538,289,428.87x = 807,434,144.39 × 129,345,579.91
  4. Step 4: Simplify right side
    538,289,428.87x = 104,438,037,645,259,216
  5. Step 5: Solve for x
    x = 104,438,037,645,259,216/538,289,428.87
  6. Step 6: Final answer
    x = 194,018,370.13

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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.