Home / 788,531,781.51-1,088,508,916.69-491,320,867

Finding the Fourth Proportional to 788,531,781.51, 1,088,508,916.69 and 491,320,867

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Solution

The fourth proportional to 788,531,781.51, 1,088,508,916.69 and 491,320,867 is: 678,231,565.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    788,531,781.51 : 1,088,508,916.69 = 491,320,867 : x
  2. Step 2: Convert to fraction form
    788,531,781.51/1,088,508,916.69 = 491,320,867/x
  3. Step 3: Cross multiply
    788,531,781.51x = 1,088,508,916.69 × 491,320,867
  4. Step 4: Simplify right side
    788,531,781.51x = 534,807,144,685,361,600
  5. Step 5: Solve for x
    x = 534,807,144,685,361,600/788,531,781.51
  6. Step 6: Final answer
    x = 678,231,565.58

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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.