Home / 771,078.36-1,063,961.19-484,395.42

Finding the Fourth Proportional to 771,078.36, 1,063,961.19 and 484,395.42

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Solution

The fourth proportional to 771,078.36, 1,063,961.19 and 484,395.42 is: 668,385.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,078.36 : 1,063,961.19 = 484,395.42 : x
  2. Step 2: Convert to fraction form
    771,078.36/1,063,961.19 = 484,395.42/x
  3. Step 3: Cross multiply
    771,078.36x = 1,063,961.19 × 484,395.42
  4. Step 4: Simplify right side
    771,078.36x = 515,377,927,493.75
  5. Step 5: Solve for x
    x = 515,377,927,493.75/771,078.36
  6. Step 6: Final answer
    x = 668,385.93

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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.