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Finding the Fourth Proportional to 579,439.60, 867,409.80 and 509,455.60

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Solution

The fourth proportional to 579,439.60, 867,409.80 and 509,455.60 is: 762,645.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,439.60 : 867,409.80 = 509,455.60 : x
  2. Step 2: Convert to fraction form
    579,439.60/867,409.80 = 509,455.60/x
  3. Step 3: Cross multiply
    579,439.60x = 867,409.80 × 509,455.60
  4. Step 4: Simplify right side
    579,439.60x = 441,906,780,104.88
  5. Step 5: Solve for x
    x = 441,906,780,104.88/579,439.60
  6. Step 6: Final answer
    x = 762,645.11

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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.