Home / 391,940,775.86-540,602,897.54-257,935,997.07

Finding the Fourth Proportional to 391,940,775.86, 540,602,897.54 and 257,935,997.07

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Solution

The fourth proportional to 391,940,775.86, 540,602,897.54 and 257,935,997.07 is: 355,770,453.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,940,775.86 : 540,602,897.54 = 257,935,997.07 : x
  2. Step 2: Convert to fraction form
    391,940,775.86/540,602,897.54 = 257,935,997.07/x
  3. Step 3: Cross multiply
    391,940,775.86x = 540,602,897.54 × 257,935,997.07
  4. Step 4: Simplify right side
    391,940,775.86x = 139,440,947,394,621,264
  5. Step 5: Solve for x
    x = 139,440,947,394,621,264/391,940,775.86
  6. Step 6: Final answer
    x = 355,770,453.05

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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.