Home / 811,842,997.41-1,120,343,336.10-440,565,028.78

Finding the Fourth Proportional to 811,842,997.41, 1,120,343,336.10 and 440,565,028.78

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Solution

The fourth proportional to 811,842,997.41, 1,120,343,336.10 and 440,565,028.78 is: 607,979,739.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,842,997.41 : 1,120,343,336.10 = 440,565,028.78 : x
  2. Step 2: Convert to fraction form
    811,842,997.41/1,120,343,336.10 = 440,565,028.78/x
  3. Step 3: Cross multiply
    811,842,997.41x = 1,120,343,336.10 × 440,565,028.78
  4. Step 4: Simplify right side
    811,842,997.41x = 493,584,094,112,377,664
  5. Step 5: Solve for x
    x = 493,584,094,112,377,664/811,842,997.41
  6. Step 6: Final answer
    x = 607,979,739.54

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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.