Home / 814,920.48-1,222,630.98-388,999.80

Finding the Fourth Proportional to 814,920.48, 1,222,630.98 and 388,999.80

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Solution

The fourth proportional to 814,920.48, 1,222,630.98 and 388,999.80 is: 583,619.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,920.48 : 1,222,630.98 = 388,999.80 : x
  2. Step 2: Convert to fraction form
    814,920.48/1,222,630.98 = 388,999.80/x
  3. Step 3: Cross multiply
    814,920.48x = 1,222,630.98 × 388,999.80
  4. Step 4: Simplify right side
    814,920.48x = 475,603,206,693.80
  5. Step 5: Solve for x
    x = 475,603,206,693.80/814,920.48
  6. Step 6: Final answer
    x = 583,619.16

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1.5x scale

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.