Home / 2,138,470.50-2,950,362.70-1,220,039.86

Finding the Fourth Proportional to 2,138,470.50, 2,950,362.70 and 1,220,039.86

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Solution

The fourth proportional to 2,138,470.50, 2,950,362.70 and 1,220,039.86 is: 1,683,240.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,138,470.50 : 2,950,362.70 = 1,220,039.86 : x
  2. Step 2: Convert to fraction form
    2,138,470.50/2,950,362.70 = 1,220,039.86/x
  3. Step 3: Cross multiply
    2,138,470.50x = 2,950,362.70 × 1,220,039.86
  4. Step 4: Simplify right side
    2,138,470.50x = 3,599,560,095,457.22
  5. Step 5: Solve for x
    x = 3,599,560,095,457.22/2,138,470.50
  6. Step 6: Final answer
    x = 1,683,240.47

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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.