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Finding the Fourth Proportional to 622,379.34, 858,900.51 and 380,657.52

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Solution

The fourth proportional to 622,379.34, 858,900.51 and 380,657.52 is: 525,317.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,379.34 : 858,900.51 = 380,657.52 : x
  2. Step 2: Convert to fraction form
    622,379.34/858,900.51 = 380,657.52/x
  3. Step 3: Cross multiply
    622,379.34x = 858,900.51 × 380,657.52
  4. Step 4: Simplify right side
    622,379.34x = 326,946,938,063.34
  5. Step 5: Solve for x
    x = 326,946,938,063.34/622,379.34
  6. Step 6: Final answer
    x = 525,317.79

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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.