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Finding the Fourth Proportional to 520,611.60, 780,917.40 and 146,634.60

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Solution

The fourth proportional to 520,611.60, 780,917.40 and 146,634.60 is: 219,951.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,611.60 : 780,917.40 = 146,634.60 : x
  2. Step 2: Convert to fraction form
    520,611.60/780,917.40 = 146,634.60/x
  3. Step 3: Cross multiply
    520,611.60x = 780,917.40 × 146,634.60
  4. Step 4: Simplify right side
    520,611.60x = 114,509,510,582.04
  5. Step 5: Solve for x
    x = 114,509,510,582.04/520,611.60
  6. Step 6: Final answer
    x = 219,951.90

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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.