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Finding the Fourth Proportional to 622,374.84, 858,894.30 and 380,653.02

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Solution

The fourth proportional to 622,374.84, 858,894.30 and 380,653.02 is: 525,311.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,374.84 : 858,894.30 = 380,653.02 : x
  2. Step 2: Convert to fraction form
    622,374.84/858,894.30 = 380,653.02/x
  3. Step 3: Cross multiply
    622,374.84x = 858,894.30 × 380,653.02
  4. Step 4: Simplify right side
    622,374.84x = 326,940,709,155.79
  5. Step 5: Solve for x
    x = 326,940,709,155.79/622,374.84
  6. Step 6: Final answer
    x = 525,311.58

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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.