Home / 781,778,402.77-1,172,666,613.87-199,512,661.39

Finding the Fourth Proportional to 781,778,402.77, 1,172,666,613.87 and 199,512,661.39

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Solution

The fourth proportional to 781,778,402.77, 1,172,666,613.87 and 199,512,661.39 is: 299,268,739.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,778,402.77 : 1,172,666,613.87 = 199,512,661.39 : x
  2. Step 2: Convert to fraction form
    781,778,402.77/1,172,666,613.87 = 199,512,661.39/x
  3. Step 3: Cross multiply
    781,778,402.77x = 1,172,666,613.87 × 199,512,661.39
  4. Step 4: Simplify right side
    781,778,402.77x = 233,961,837,056,403,136
  5. Step 5: Solve for x
    x = 233,961,837,056,403,136/781,778,402.77
  6. Step 6: Final answer
    x = 299,268,739.36

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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.