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Finding the Fourth Proportional to 508,506.54, 763,950.84 and 479,781.21

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Solution

The fourth proportional to 508,506.54, 763,950.84 and 479,781.21 is: 720,795.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,506.54 : 763,950.84 = 479,781.21 : x
  2. Step 2: Convert to fraction form
    508,506.54/763,950.84 = 479,781.21/x
  3. Step 3: Cross multiply
    508,506.54x = 763,950.84 × 479,781.21
  4. Step 4: Simplify right side
    508,506.54x = 366,529,258,395.72
  5. Step 5: Solve for x
    x = 366,529,258,395.72/508,506.54
  6. Step 6: Final answer
    x = 720,795.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.