Home / 769,873.30-1,155,006.96-320,444.80

Finding the Fourth Proportional to 769,873.30, 1,155,006.96 and 320,444.80

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Solution

The fourth proportional to 769,873.30, 1,155,006.96 and 320,444.80 is: 480,749.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,873.30 : 1,155,006.96 = 320,444.80 : x
  2. Step 2: Convert to fraction form
    769,873.30/1,155,006.96 = 320,444.80/x
  3. Step 3: Cross multiply
    769,873.30x = 1,155,006.96 × 320,444.80
  4. Step 4: Simplify right side
    769,873.30x = 370,115,974,295.81
  5. Step 5: Solve for x
    x = 370,115,974,295.81/769,873.30
  6. Step 6: Final answer
    x = 480,749.20

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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.