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Finding the Fourth Proportional to 666,562.72, 919,833.68 and 380,175.08

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Solution

The fourth proportional to 666,562.72, 919,833.68 and 380,175.08 is: 524,628.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,562.72 : 919,833.68 = 380,175.08 : x
  2. Step 2: Convert to fraction form
    666,562.72/919,833.68 = 380,175.08/x
  3. Step 3: Cross multiply
    666,562.72x = 919,833.68 × 380,175.08
  4. Step 4: Simplify right side
    666,562.72x = 349,697,842,880.69
  5. Step 5: Solve for x
    x = 349,697,842,880.69/666,562.72
  6. Step 6: Final answer
    x = 524,628.56

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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.