Home / 391,940,761.82-540,602,878.24-257,935,983.02

Finding the Fourth Proportional to 391,940,761.82, 540,602,878.24 and 257,935,983.02

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Solution

The fourth proportional to 391,940,761.82, 540,602,878.24 and 257,935,983.02 is: 355,770,433.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,940,761.82 : 540,602,878.24 = 257,935,983.02 : x
  2. Step 2: Convert to fraction form
    391,940,761.82/540,602,878.24 = 257,935,983.02/x
  3. Step 3: Cross multiply
    391,940,761.82x = 540,602,878.24 × 257,935,983.02
  4. Step 4: Simplify right side
    391,940,761.82x = 139,440,934,822,275,776
  5. Step 5: Solve for x
    x = 139,440,934,822,275,776/391,940,761.82
  6. Step 6: Final answer
    x = 355,770,433.71

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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.