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Finding the Fourth Proportional to 551,861.75, 761,398.06 and 322,253.40

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Solution

The fourth proportional to 551,861.75, 761,398.06 and 322,253.40 is: 444,609.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,861.75 : 761,398.06 = 322,253.40 : x
  2. Step 2: Convert to fraction form
    551,861.75/761,398.06 = 322,253.40/x
  3. Step 3: Cross multiply
    551,861.75x = 761,398.06 × 322,253.40
  4. Step 4: Simplify right side
    551,861.75x = 245,363,116,242.24
  5. Step 5: Solve for x
    x = 245,363,116,242.24/551,861.75
  6. Step 6: Final answer
    x = 444,609.75

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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.