Home / 727,085.80-1,003,368.86-421,203.88

Finding the Fourth Proportional to 727,085.80, 1,003,368.86 and 421,203.88

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Solution

The fourth proportional to 727,085.80, 1,003,368.86 and 421,203.88 is: 581,255.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    727,085.80 : 1,003,368.86 = 421,203.88 : x
  2. Step 2: Convert to fraction form
    727,085.80/1,003,368.86 = 421,203.88/x
  3. Step 3: Cross multiply
    727,085.80x = 1,003,368.86 × 421,203.88
  4. Step 4: Simplify right side
    727,085.80x = 422,622,856,903.18
  5. Step 5: Solve for x
    x = 422,622,856,903.18/727,085.80
  6. Step 6: Final answer
    x = 581,255.83

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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.