Home / 727,047.18-1,003,302.33-421,129.55

Finding the Fourth Proportional to 727,047.18, 1,003,302.33 and 421,129.55

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Solution

The fourth proportional to 727,047.18, 1,003,302.33 and 421,129.55 is: 581,145.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    727,047.18 : 1,003,302.33 = 421,129.55 : x
  2. Step 2: Convert to fraction form
    727,047.18/1,003,302.33 = 421,129.55/x
  3. Step 3: Cross multiply
    727,047.18x = 1,003,302.33 × 421,129.55
  4. Step 4: Simplify right side
    727,047.18x = 422,520,253,730.34
  5. Step 5: Solve for x
    x = 422,520,253,730.34/727,047.18
  6. Step 6: Final answer
    x = 581,145.58

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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.