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Finding the Fourth Proportional to 624,639.07, 862,002.21 and 338,159.17

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Solution

The fourth proportional to 624,639.07, 862,002.21 and 338,159.17 is: 466,659.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,639.07 : 862,002.21 = 338,159.17 : x
  2. Step 2: Convert to fraction form
    624,639.07/862,002.21 = 338,159.17/x
  3. Step 3: Cross multiply
    624,639.07x = 862,002.21 × 338,159.17
  4. Step 4: Simplify right side
    624,639.07x = 291,493,951,871.77
  5. Step 5: Solve for x
    x = 291,493,951,871.77/624,639.07
  6. Step 6: Final answer
    x = 466,659.81

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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.