Home / 746,743.20-1,119,458.70-447,342.90

Finding the Fourth Proportional to 746,743.20, 1,119,458.70 and 447,342.90

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Solution

The fourth proportional to 746,743.20, 1,119,458.70 and 447,342.90 is: 670,621.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    746,743.20 : 1,119,458.70 = 447,342.90 : x
  2. Step 2: Convert to fraction form
    746,743.20/1,119,458.70 = 447,342.90/x
  3. Step 3: Cross multiply
    746,743.20x = 1,119,458.70 × 447,342.90
  4. Step 4: Simplify right side
    746,743.20x = 500,781,901,288.23
  5. Step 5: Solve for x
    x = 500,781,901,288.23/746,743.20
  6. Step 6: Final answer
    x = 670,621.31

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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.