Home / 516,913.60-774,448.80-422,910.40

Finding the Fourth Proportional to 516,913.60, 774,448.80 and 422,910.40

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Solution

The fourth proportional to 516,913.60, 774,448.80 and 422,910.40 is: 633,611.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,913.60 : 774,448.80 = 422,910.40 : x
  2. Step 2: Convert to fraction form
    516,913.60/774,448.80 = 422,910.40/x
  3. Step 3: Cross multiply
    516,913.60x = 774,448.80 × 422,910.40
  4. Step 4: Simplify right side
    516,913.60x = 327,522,451,787.52
  5. Step 5: Solve for x
    x = 327,522,451,787.52/516,913.60
  6. Step 6: Final answer
    x = 633,611.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.