Home / 808,580.80-1,213,869.60-509,060.80

Finding the Fourth Proportional to 808,580.80, 1,213,869.60 and 509,060.80

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Solution

The fourth proportional to 808,580.80, 1,213,869.60 and 509,060.80 is: 764,219.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,580.80 : 1,213,869.60 = 509,060.80 : x
  2. Step 2: Convert to fraction form
    808,580.80/1,213,869.60 = 509,060.80/x
  3. Step 3: Cross multiply
    808,580.80x = 1,213,869.60 × 509,060.80
  4. Step 4: Simplify right side
    808,580.80x = 617,933,429,671.68
  5. Step 5: Solve for x
    x = 617,933,429,671.68/808,580.80
  6. Step 6: Final answer
    x = 764,219.77

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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.