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Finding the Fourth Proportional to 681,397,607.56, 940,328,726.02 and 368,131,820.44

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Solution

The fourth proportional to 681,397,607.56, 940,328,726.02 and 368,131,820.44 is: 508,021,927.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,397,607.56 : 940,328,726.02 = 368,131,820.44 : x
  2. Step 2: Convert to fraction form
    681,397,607.56/940,328,726.02 = 368,131,820.44/x
  3. Step 3: Cross multiply
    681,397,607.56x = 940,328,726.02 × 368,131,820.44
  4. Step 4: Simplify right side
    681,397,607.56x = 346,164,925,721,768,576
  5. Step 5: Solve for x
    x = 346,164,925,721,768,576/681,397,607.56
  6. Step 6: Final answer
    x = 508,021,927.11

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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.