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Finding the Fourth Proportional to 620,129.53, 855,726.42 and 375,205.51

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Solution

The fourth proportional to 620,129.53, 855,726.42 and 375,205.51 is: 517,751.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,129.53 : 855,726.42 = 375,205.51 : x
  2. Step 2: Convert to fraction form
    620,129.53/855,726.42 = 375,205.51/x
  3. Step 3: Cross multiply
    620,129.53x = 855,726.42 × 375,205.51
  4. Step 4: Simplify right side
    620,129.53x = 321,073,267,836.57
  5. Step 5: Solve for x
    x = 321,073,267,836.57/620,129.53
  6. Step 6: Final answer
    x = 517,751.94

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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.