Home / 878,139.17-1,211,388.22-587,762.87

Finding the Fourth Proportional to 878,139.17, 1,211,388.22 and 587,762.87

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Solution

The fourth proportional to 878,139.17, 1,211,388.22 and 587,762.87 is: 810,815.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,139.17 : 1,211,388.22 = 587,762.87 : x
  2. Step 2: Convert to fraction form
    878,139.17/1,211,388.22 = 587,762.87/x
  3. Step 3: Cross multiply
    878,139.17x = 1,211,388.22 × 587,762.87
  4. Step 4: Simplify right side
    878,139.17x = 712,009,016,871.39
  5. Step 5: Solve for x
    x = 712,009,016,871.39/878,139.17
  6. Step 6: Final answer
    x = 810,815.69

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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.