Home / 538,289,428.43-807,434,143.74-129,345,579.47

Finding the Fourth Proportional to 538,289,428.43, 807,434,143.74 and 129,345,579.47

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Solution

The fourth proportional to 538,289,428.43, 807,434,143.74 and 129,345,579.47 is: 194,018,369.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,289,428.43 : 807,434,143.74 = 129,345,579.47 : x
  2. Step 2: Convert to fraction form
    538,289,428.43/807,434,143.74 = 129,345,579.47/x
  3. Step 3: Cross multiply
    538,289,428.43x = 807,434,143.74 × 129,345,579.47
  4. Step 4: Simplify right side
    538,289,428.43x = 104,438,037,207,932,160
  5. Step 5: Solve for x
    x = 104,438,037,207,932,160/538,289,428.43
  6. Step 6: Final answer
    x = 194,018,369.47

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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.