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Finding the Fourth Proportional to 621,726.94, 858,014.76 and 367,072.66

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Solution

The fourth proportional to 621,726.94, 858,014.76 and 367,072.66 is: 506,578.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,726.94 : 858,014.76 = 367,072.66 : x
  2. Step 2: Convert to fraction form
    621,726.94/858,014.76 = 367,072.66/x
  3. Step 3: Cross multiply
    621,726.94x = 858,014.76 × 367,072.66
  4. Step 4: Simplify right side
    621,726.94x = 314,953,760,272.46
  5. Step 5: Solve for x
    x = 314,953,760,272.46/621,726.94
  6. Step 6: Final answer
    x = 506,578.92

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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.