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Finding the Fourth Proportional to 550,261.62, 759,369.06 and 320,812.65

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Solution

The fourth proportional to 550,261.62, 759,369.06 and 320,812.65 is: 442,726.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,261.62 : 759,369.06 = 320,812.65 : x
  2. Step 2: Convert to fraction form
    550,261.62/759,369.06 = 320,812.65/x
  3. Step 3: Cross multiply
    550,261.62x = 759,369.06 × 320,812.65
  4. Step 4: Simplify right side
    550,261.62x = 243,615,200,466.61
  5. Step 5: Solve for x
    x = 243,615,200,466.61/550,261.62
  6. Step 6: Final answer
    x = 442,726.14

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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.