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Finding the Fourth Proportional to 620,842.44, 856,084.44 and 419,288.52

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Solution

The fourth proportional to 620,842.44, 856,084.44 and 419,288.52 is: 578,160.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,842.44 : 856,084.44 = 419,288.52 : x
  2. Step 2: Convert to fraction form
    620,842.44/856,084.44 = 419,288.52/x
  3. Step 3: Cross multiply
    620,842.44x = 856,084.44 × 419,288.52
  4. Step 4: Simplify right side
    620,842.44x = 358,946,377,842.63
  5. Step 5: Solve for x
    x = 358,946,377,842.63/620,842.44
  6. Step 6: Final answer
    x = 578,160.18

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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.