Home / 985,121.55-1,359,469.35-555,400.53

Finding the Fourth Proportional to 985,121.55, 1,359,469.35 and 555,400.53

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Solution

The fourth proportional to 985,121.55, 1,359,469.35 and 555,400.53 is: 766,453.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,121.55 : 1,359,469.35 = 555,400.53 : x
  2. Step 2: Convert to fraction form
    985,121.55/1,359,469.35 = 555,400.53/x
  3. Step 3: Cross multiply
    985,121.55x = 1,359,469.35 × 555,400.53
  4. Step 4: Simplify right side
    985,121.55x = 755,049,997,508.76
  5. Step 5: Solve for x
    x = 755,049,997,508.76/985,121.55
  6. Step 6: Final answer
    x = 766,453.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.