Home / 419,904,581.10-629,856,871.65-256,645,905.90

Finding the Fourth Proportional to 419,904,581.10, 629,856,871.65 and 256,645,905.90

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Solution

The fourth proportional to 419,904,581.10, 629,856,871.65 and 256,645,905.90 is: 384,968,858.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,904,581.10 : 629,856,871.65 = 256,645,905.90 : x
  2. Step 2: Convert to fraction form
    419,904,581.10/629,856,871.65 = 256,645,905.90/x
  3. Step 3: Cross multiply
    419,904,581.10x = 629,856,871.65 × 256,645,905.90
  4. Step 4: Simplify right side
    419,904,581.10x = 161,650,187,411,954,272
  5. Step 5: Solve for x
    x = 161,650,187,411,954,272/419,904,581.10
  6. Step 6: Final answer
    x = 384,968,858.85

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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.