Home / 878,137.17-1,211,385.47-587,760.87

Finding the Fourth Proportional to 878,137.17, 1,211,385.47 and 587,760.87

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Solution

The fourth proportional to 878,137.17, 1,211,385.47 and 587,760.87 is: 810,812.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,137.17 : 1,211,385.47 = 587,760.87 : x
  2. Step 2: Convert to fraction form
    878,137.17/1,211,385.47 = 587,760.87/x
  3. Step 3: Cross multiply
    878,137.17x = 1,211,385.47 × 587,760.87
  4. Step 4: Simplify right side
    878,137.17x = 712,004,974,813.76
  5. Step 5: Solve for x
    x = 712,004,974,813.76/878,137.17
  6. Step 6: Final answer
    x = 810,812.93

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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.