Home / 821,348.60-1,231,907.70-260,439.80

Finding the Fourth Proportional to 821,348.60, 1,231,907.70 and 260,439.80

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Solution

The fourth proportional to 821,348.60, 1,231,907.70 and 260,439.80 is: 390,623.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,348.60 : 1,231,907.70 = 260,439.80 : x
  2. Step 2: Convert to fraction form
    821,348.60/1,231,907.70 = 260,439.80/x
  3. Step 3: Cross multiply
    821,348.60x = 1,231,907.70 × 260,439.80
  4. Step 4: Simplify right side
    821,348.60x = 320,837,795,006.46
  5. Step 5: Solve for x
    x = 320,837,795,006.46/821,348.60
  6. Step 6: Final answer
    x = 390,623.17

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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.