Home / 808,415,999.10-1,212,623,998.65-441,083,979.90

Finding the Fourth Proportional to 808,415,999.10, 1,212,623,998.65 and 441,083,979.90

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Solution

The fourth proportional to 808,415,999.10, 1,212,623,998.65 and 441,083,979.90 is: 661,625,969.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,415,999.10 : 1,212,623,998.65 = 441,083,979.90 : x
  2. Step 2: Convert to fraction form
    808,415,999.10/1,212,623,998.65 = 441,083,979.90/x
  3. Step 3: Cross multiply
    808,415,999.10x = 1,212,623,998.65 × 441,083,979.90
  4. Step 4: Simplify right side
    808,415,999.10x = 534,869,019,446,794,240
  5. Step 5: Solve for x
    x = 534,869,019,446,794,240/808,415,999.10
  6. Step 6: Final answer
    x = 661,625,969.85

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1.5x scale

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.