Home / 911,530.15-1,256,844.64-621,313.54

Finding the Fourth Proportional to 911,530.15, 1,256,844.64 and 621,313.54

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Solution

The fourth proportional to 911,530.15, 1,256,844.64 and 621,313.54 is: 856,685.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,530.15 : 1,256,844.64 = 621,313.54 : x
  2. Step 2: Convert to fraction form
    911,530.15/1,256,844.64 = 621,313.54/x
  3. Step 3: Cross multiply
    911,530.15x = 1,256,844.64 × 621,313.54
  4. Step 4: Simplify right side
    911,530.15x = 780,894,596,057.70
  5. Step 5: Solve for x
    x = 780,894,596,057.70/911,530.15
  6. Step 6: Final answer
    x = 856,685.43

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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.