Home / 727,381.26-1,003,908.29-421,648.89

Finding the Fourth Proportional to 727,381.26, 1,003,908.29 and 421,648.89

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Solution

The fourth proportional to 727,381.26, 1,003,908.29 and 421,648.89 is: 581,946.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    727,381.26 : 1,003,908.29 = 421,648.89 : x
  2. Step 2: Convert to fraction form
    727,381.26/1,003,908.29 = 421,648.89/x
  3. Step 3: Cross multiply
    727,381.26x = 1,003,908.29 × 421,648.89
  4. Step 4: Simplify right side
    727,381.26x = 423,296,809,012.51
  5. Step 5: Solve for x
    x = 423,296,809,012.51/727,381.26
  6. Step 6: Final answer
    x = 581,946.27

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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.