Home / 485,904,057.92-669,939,348-405,551,403.20

Finding the Fourth Proportional to 485,904,057.92, 669,939,348 and 405,551,403.20

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Solution

The fourth proportional to 485,904,057.92, 669,939,348 and 405,551,403.20 is: 559,153,269.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,904,057.92 : 669,939,348 = 405,551,403.20 : x
  2. Step 2: Convert to fraction form
    485,904,057.92/669,939,348 = 405,551,403.20/x
  3. Step 3: Cross multiply
    485,904,057.92x = 669,939,348 × 405,551,403.20
  4. Step 4: Simplify right side
    485,904,057.92x = 271,694,842,640,293,120
  5. Step 5: Solve for x
    x = 271,694,842,640,293,120/485,904,057.92
  6. Step 6: Final answer
    x = 559,153,269.48

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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.