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Finding the Fourth Proportional to 622,305.76, 858,799.28 and 380,584

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Solution

The fourth proportional to 622,305.76, 858,799.28 and 380,584 is: 525,216.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,305.76 : 858,799.28 = 380,584 : x
  2. Step 2: Convert to fraction form
    622,305.76/858,799.28 = 380,584/x
  3. Step 3: Cross multiply
    622,305.76x = 858,799.28 × 380,584
  4. Step 4: Simplify right side
    622,305.76x = 326,845,265,179.52
  5. Step 5: Solve for x
    x = 326,845,265,179.52/622,305.76
  6. Step 6: Final answer
    x = 525,216.52

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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.