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Finding the Fourth Proportional to 666,795.96, 919,949.94 and 380,108.88

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Solution

The fourth proportional to 666,795.96, 919,949.94 and 380,108.88 is: 524,420.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,795.96 : 919,949.94 = 380,108.88 : x
  2. Step 2: Convert to fraction form
    666,795.96/919,949.94 = 380,108.88/x
  3. Step 3: Cross multiply
    666,795.96x = 919,949.94 × 380,108.88
  4. Step 4: Simplify right side
    666,795.96x = 349,681,141,349.47
  5. Step 5: Solve for x
    x = 349,681,141,349.47/666,795.96
  6. Step 6: Final answer
    x = 524,420.01

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.