Home / 746,287.20-1,118,199.60-430,192.80

Finding the Fourth Proportional to 746,287.20, 1,118,199.60 and 430,192.80

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Solution

The fourth proportional to 746,287.20, 1,118,199.60 and 430,192.80 is: 644,579.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    746,287.20 : 1,118,199.60 = 430,192.80 : x
  2. Step 2: Convert to fraction form
    746,287.20/1,118,199.60 = 430,192.80/x
  3. Step 3: Cross multiply
    746,287.20x = 1,118,199.60 × 430,192.80
  4. Step 4: Simplify right side
    746,287.20x = 481,041,416,882.88
  5. Step 5: Solve for x
    x = 481,041,416,882.88/746,287.20
  6. Step 6: Final answer
    x = 644,579.48

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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.