Home / 808,728.80-1,214,091.60-509,208.80

Finding the Fourth Proportional to 808,728.80, 1,214,091.60 and 509,208.80

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Solution

The fourth proportional to 808,728.80, 1,214,091.60 and 509,208.80 is: 764,441.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,728.80 : 1,214,091.60 = 509,208.80 : x
  2. Step 2: Convert to fraction form
    808,728.80/1,214,091.60 = 509,208.80/x
  3. Step 3: Cross multiply
    808,728.80x = 1,214,091.60 × 509,208.80
  4. Step 4: Simplify right side
    808,728.80x = 618,226,126,726.08
  5. Step 5: Solve for x
    x = 618,226,126,726.08/808,728.80
  6. Step 6: Final answer
    x = 764,441.83

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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.