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Finding the Fourth Proportional to 501,017.70, 690,619.05 and 379,673.22

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Solution

The fourth proportional to 501,017.70, 690,619.05 and 379,673.22 is: 523,353.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,017.70 : 690,619.05 = 379,673.22 : x
  2. Step 2: Convert to fraction form
    501,017.70/690,619.05 = 379,673.22/x
  3. Step 3: Cross multiply
    501,017.70x = 690,619.05 × 379,673.22
  4. Step 4: Simplify right side
    501,017.70x = 262,209,558,506.84
  5. Step 5: Solve for x
    x = 262,209,558,506.84/501,017.70
  6. Step 6: Final answer
    x = 523,353.88

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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.