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Finding the Fourth Proportional to 515,318.48, 773,247.96 and 374,328.56

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Solution

The fourth proportional to 515,318.48, 773,247.96 and 374,328.56 is: 561,689.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,318.48 : 773,247.96 = 374,328.56 : x
  2. Step 2: Convert to fraction form
    515,318.48/773,247.96 = 374,328.56/x
  3. Step 3: Cross multiply
    515,318.48x = 773,247.96 × 374,328.56
  4. Step 4: Simplify right side
    515,318.48x = 289,448,795,389.74
  5. Step 5: Solve for x
    x = 289,448,795,389.74/515,318.48
  6. Step 6: Final answer
    x = 561,689.14

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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.