Home / 727,428.12-1,003,881.84-405,138.24

Finding the Fourth Proportional to 727,428.12, 1,003,881.84 and 405,138.24

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Solution

The fourth proportional to 727,428.12, 1,003,881.84 and 405,138.24 is: 559,108.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    727,428.12 : 1,003,881.84 = 405,138.24 : x
  2. Step 2: Convert to fraction form
    727,428.12/1,003,881.84 = 405,138.24/x
  3. Step 3: Cross multiply
    727,428.12x = 1,003,881.84 × 405,138.24
  4. Step 4: Simplify right side
    727,428.12x = 406,710,921,825.56
  5. Step 5: Solve for x
    x = 406,710,921,825.56/727,428.12
  6. Step 6: Final answer
    x = 559,108.06

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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.