Home / 746,608.80-1,120,057.20-320,138.40

Finding the Fourth Proportional to 746,608.80, 1,120,057.20 and 320,138.40

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Solution

The fourth proportional to 746,608.80, 1,120,057.20 and 320,138.40 is: 480,269.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    746,608.80 : 1,120,057.20 = 320,138.40 : x
  2. Step 2: Convert to fraction form
    746,608.80/1,120,057.20 = 320,138.40/x
  3. Step 3: Cross multiply
    746,608.80x = 1,120,057.20 × 320,138.40
  4. Step 4: Simplify right side
    746,608.80x = 358,573,319,916.48
  5. Step 5: Solve for x
    x = 358,573,319,916.48/746,608.80
  6. Step 6: Final answer
    x = 480,269.35

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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.