Home / 985,655.60-1,478,137.80-512,183.60

Finding the Fourth Proportional to 985,655.60, 1,478,137.80 and 512,183.60

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Solution

The fourth proportional to 985,655.60, 1,478,137.80 and 512,183.60 is: 768,095.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,655.60 : 1,478,137.80 = 512,183.60 : x
  2. Step 2: Convert to fraction form
    985,655.60/1,478,137.80 = 512,183.60/x
  3. Step 3: Cross multiply
    985,655.60x = 1,478,137.80 × 512,183.60
  4. Step 4: Simplify right side
    985,655.60x = 757,077,939,700.08
  5. Step 5: Solve for x
    x = 757,077,939,700.08/985,655.60
  6. Step 6: Final answer
    x = 768,095.81

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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.