Home / 3,121,208.70-4,678,313.85-1,323,786.30

Finding the Fourth Proportional to 3,121,208.70, 4,678,313.85 and 1,323,786.30

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Solution

The fourth proportional to 3,121,208.70, 4,678,313.85 and 1,323,786.30 is: 1,984,195.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,121,208.70 : 4,678,313.85 = 1,323,786.30 : x
  2. Step 2: Convert to fraction form
    3,121,208.70/4,678,313.85 = 1,323,786.30/x
  3. Step 3: Cross multiply
    3,121,208.70x = 4,678,313.85 × 1,323,786.30
  4. Step 4: Simplify right side
    3,121,208.70x = 6,193,087,781,730.26
  5. Step 5: Solve for x
    x = 6,193,087,781,730.26/3,121,208.70
  6. Step 6: Final answer
    x = 1,984,195.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.