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Finding the Fourth Proportional to 622,389.15, 858,684.34 and 377,448.80

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Solution

The fourth proportional to 622,389.15, 858,684.34 and 377,448.80 is: 520,750.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,389.15 : 858,684.34 = 377,448.80 : x
  2. Step 2: Convert to fraction form
    622,389.15/858,684.34 = 377,448.80/x
  3. Step 3: Cross multiply
    622,389.15x = 858,684.34 × 377,448.80
  4. Step 4: Simplify right side
    622,389.15x = 324,109,369,890.18
  5. Step 5: Solve for x
    x = 324,109,369,890.18/622,389.15
  6. Step 6: Final answer
    x = 520,750.35

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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.