Home / 765,450.45-1,148,433.78-338,928.03

Finding the Fourth Proportional to 765,450.45, 1,148,433.78 and 338,928.03

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Solution

The fourth proportional to 765,450.45, 1,148,433.78 and 338,928.03 is: 508,506.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,450.45 : 1,148,433.78 = 338,928.03 : x
  2. Step 2: Convert to fraction form
    765,450.45/1,148,433.78 = 338,928.03/x
  3. Step 3: Cross multiply
    765,450.45x = 1,148,433.78 × 338,928.03
  4. Step 4: Simplify right side
    765,450.45x = 389,236,398,640.85
  5. Step 5: Solve for x
    x = 389,236,398,640.85/765,450.45
  6. Step 6: Final answer
    x = 508,506.33

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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.