Home / 746,599.80-1,120,043.70-320,129.40

Finding the Fourth Proportional to 746,599.80, 1,120,043.70 and 320,129.40

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Solution

The fourth proportional to 746,599.80, 1,120,043.70 and 320,129.40 is: 480,255.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    746,599.80 : 1,120,043.70 = 320,129.40 : x
  2. Step 2: Convert to fraction form
    746,599.80/1,120,043.70 = 320,129.40/x
  3. Step 3: Cross multiply
    746,599.80x = 1,120,043.70 × 320,129.40
  4. Step 4: Simplify right side
    746,599.80x = 358,558,917,654.78
  5. Step 5: Solve for x
    x = 358,558,917,654.78/746,599.80
  6. Step 6: Final answer
    x = 480,255.84

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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.