Home / 727,999.08-1,004,642.09-422,256.48

Finding the Fourth Proportional to 727,999.08, 1,004,642.09 and 422,256.48

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Solution

The fourth proportional to 727,999.08, 1,004,642.09 and 422,256.48 is: 582,715.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    727,999.08 : 1,004,642.09 = 422,256.48 : x
  2. Step 2: Convert to fraction form
    727,999.08/1,004,642.09 = 422,256.48/x
  3. Step 3: Cross multiply
    727,999.08x = 1,004,642.09 × 422,256.48
  4. Step 4: Simplify right side
    727,999.08x = 424,216,632,583.24
  5. Step 5: Solve for x
    x = 424,216,632,583.24/727,999.08
  6. Step 6: Final answer
    x = 582,715.89

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1.5x scale

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.