Home / 788,531,780.51-1,088,508,915.31-491,320,866

Finding the Fourth Proportional to 788,531,780.51, 1,088,508,915.31 and 491,320,866

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Solution

The fourth proportional to 788,531,780.51, 1,088,508,915.31 and 491,320,866 is: 678,231,564.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    788,531,780.51 : 1,088,508,915.31 = 491,320,866 : x
  2. Step 2: Convert to fraction form
    788,531,780.51/1,088,508,915.31 = 491,320,866/x
  3. Step 3: Cross multiply
    788,531,780.51x = 1,088,508,915.31 × 491,320,866
  4. Step 4: Simplify right side
    788,531,780.51x = 534,807,142,917,601,472
  5. Step 5: Solve for x
    x = 534,807,142,917,601,472/788,531,780.51
  6. Step 6: Final answer
    x = 678,231,564.21

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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.