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Finding the Fourth Proportional to 611,864.20, 917,018.70 and 295,640.20

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Solution

The fourth proportional to 611,864.20, 917,018.70 and 295,640.20 is: 443,084.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,864.20 : 917,018.70 = 295,640.20 : x
  2. Step 2: Convert to fraction form
    611,864.20/917,018.70 = 295,640.20/x
  3. Step 3: Cross multiply
    611,864.20x = 917,018.70 × 295,640.20
  4. Step 4: Simplify right side
    611,864.20x = 271,107,591,871.74
  5. Step 5: Solve for x
    x = 271,107,591,871.74/611,864.20
  6. Step 6: Final answer
    x = 443,084.58

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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.