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Finding the Fourth Proportional to 666,247.18, 997,769.40 and 381,073.48

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Solution

The fourth proportional to 666,247.18, 997,769.40 and 381,073.48 is: 570,694.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,247.18 : 997,769.40 = 381,073.48 : x
  2. Step 2: Convert to fraction form
    666,247.18/997,769.40 = 381,073.48/x
  3. Step 3: Cross multiply
    666,247.18x = 997,769.40 × 381,073.48
  4. Step 4: Simplify right side
    666,247.18x = 380,223,457,495.51
  5. Step 5: Solve for x
    x = 380,223,457,495.51/666,247.18
  6. Step 6: Final answer
    x = 570,694.28

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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.