Home / 391,940,761.32-540,602,877.54-257,935,982.54

Finding the Fourth Proportional to 391,940,761.32, 540,602,877.54 and 257,935,982.54

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Solution

The fourth proportional to 391,940,761.32, 540,602,877.54 and 257,935,982.54 is: 355,770,433.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,940,761.32 : 540,602,877.54 = 257,935,982.54 : x
  2. Step 2: Convert to fraction form
    391,940,761.32/540,602,877.54 = 257,935,982.54/x
  3. Step 3: Cross multiply
    391,940,761.32x = 540,602,877.54 × 257,935,982.54
  4. Step 4: Simplify right side
    391,940,761.32x = 139,440,934,379,528,176
  5. Step 5: Solve for x
    x = 139,440,934,379,528,176/391,940,761.32
  6. Step 6: Final answer
    x = 355,770,433.04

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.