Home / 783,777.11-1,081,598.40-439,613.78

Finding the Fourth Proportional to 783,777.11, 1,081,598.40 and 439,613.78

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Solution

The fourth proportional to 783,777.11, 1,081,598.40 and 439,613.78 is: 606,659.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    783,777.11 : 1,081,598.40 = 439,613.78 : x
  2. Step 2: Convert to fraction form
    783,777.11/1,081,598.40 = 439,613.78/x
  3. Step 3: Cross multiply
    783,777.11x = 1,081,598.40 × 439,613.78
  4. Step 4: Simplify right side
    783,777.11x = 475,485,555,657.96
  5. Step 5: Solve for x
    x = 475,485,555,657.96/783,777.11
  6. Step 6: Final answer
    x = 606,659.15

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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.