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Finding the Fourth Proportional to 625,717.23, 863,484.57 and 353,838.51

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Solution

The fourth proportional to 625,717.23, 863,484.57 and 353,838.51 is: 488,294.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,717.23 : 863,484.57 = 353,838.51 : x
  2. Step 2: Convert to fraction form
    625,717.23/863,484.57 = 353,838.51/x
  3. Step 3: Cross multiply
    625,717.23x = 863,484.57 × 353,838.51
  4. Step 4: Simplify right side
    625,717.23x = 305,534,093,656.79
  5. Step 5: Solve for x
    x = 305,534,093,656.79/625,717.23
  6. Step 6: Final answer
    x = 488,294.20

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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.