Home / 809,826.80-1,214,740.20-766,281.20

Finding the Fourth Proportional to 809,826.80, 1,214,740.20 and 766,281.20

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Solution

The fourth proportional to 809,826.80, 1,214,740.20 and 766,281.20 is: 1,149,421.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,826.80 : 1,214,740.20 = 766,281.20 : x
  2. Step 2: Convert to fraction form
    809,826.80/1,214,740.20 = 766,281.20/x
  3. Step 3: Cross multiply
    809,826.80x = 1,214,740.20 × 766,281.20
  4. Step 4: Simplify right side
    809,826.80x = 930,832,578,144.24
  5. Step 5: Solve for x
    x = 930,832,578,144.24/809,826.80
  6. Step 6: Final answer
    x = 1,149,421.80

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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.