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Finding the Fourth Proportional to 622,380.84, 858,902.58 and 380,659.02

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Solution

The fourth proportional to 622,380.84, 858,902.58 and 380,659.02 is: 525,319.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,380.84 : 858,902.58 = 380,659.02 : x
  2. Step 2: Convert to fraction form
    622,380.84/858,902.58 = 380,659.02/x
  3. Step 3: Cross multiply
    622,380.84x = 858,902.58 × 380,659.02
  4. Step 4: Simplify right side
    622,380.84x = 326,949,014,378.27
  5. Step 5: Solve for x
    x = 326,949,014,378.27/622,380.84
  6. Step 6: Final answer
    x = 525,319.86

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1.5x scale

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.