Home / 1,272,741,099.69-1,755,387,703.96-826,848,128.80

Finding the Fourth Proportional to 1,272,741,099.69, 1,755,387,703.96 and 826,848,128.80

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Solution

The fourth proportional to 1,272,741,099.69, 1,755,387,703.96 and 826,848,128.80 is: 1,140,403,997.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,272,741,099.69 : 1,755,387,703.96 = 826,848,128.80 : x
  2. Step 2: Convert to fraction form
    1,272,741,099.69/1,755,387,703.96 = 826,848,128.80/x
  3. Step 3: Cross multiply
    1,272,741,099.69x = 1,755,387,703.96 × 826,848,128.80
  4. Step 4: Simplify right side
    1,272,741,099.69x = 1,451,439,038,337,854,208
  5. Step 5: Solve for x
    x = 1,451,439,038,337,854,208/1,272,741,099.69
  6. Step 6: Final answer
    x = 1,140,403,997.87

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Double scale
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1.5x scale

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.