Home / 2,136,739.80-3,205,109.70-640,831.80

Finding the Fourth Proportional to 2,136,739.80, 3,205,109.70 and 640,831.80

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Solution

The fourth proportional to 2,136,739.80, 3,205,109.70 and 640,831.80 is: 961,247.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,136,739.80 : 3,205,109.70 = 640,831.80 : x
  2. Step 2: Convert to fraction form
    2,136,739.80/3,205,109.70 = 640,831.80/x
  3. Step 3: Cross multiply
    2,136,739.80x = 3,205,109.70 × 640,831.80
  4. Step 4: Simplify right side
    2,136,739.80x = 2,053,936,218,248.46
  5. Step 5: Solve for x
    x = 2,053,936,218,248.46/2,136,739.80
  6. Step 6: Final answer
    x = 961,247.70

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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.