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Finding the Fourth Proportional to 666,460.76, 919,692.97 and 380,073.02

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Solution

The fourth proportional to 666,460.76, 919,692.97 and 380,073.02 is: 524,487.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,460.76 : 919,692.97 = 380,073.02 : x
  2. Step 2: Convert to fraction form
    666,460.76/919,692.97 = 380,073.02/x
  3. Step 3: Cross multiply
    666,460.76x = 919,692.97 × 380,073.02
  4. Step 4: Simplify right side
    666,460.76x = 349,550,479,032.02
  5. Step 5: Solve for x
    x = 349,550,479,032.02/666,460.76
  6. Step 6: Final answer
    x = 524,487.72

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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.