Home / 666,469.02-919,704.33-380,081.28

Finding the Fourth Proportional to 666,469.02, 919,704.33 and 380,081.28

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Solution

The fourth proportional to 666,469.02, 919,704.33 and 380,081.28 is: 524,499.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,469.02 : 919,704.33 = 380,081.28 : x
  2. Step 2: Convert to fraction form
    666,469.02/919,704.33 = 380,081.28/x
  3. Step 3: Cross multiply
    666,469.02x = 919,704.33 × 380,081.28
  4. Step 4: Simplify right side
    666,469.02x = 349,562,398,967.94
  5. Step 5: Solve for x
    x = 349,562,398,967.94/666,469.02
  6. Step 6: Final answer
    x = 524,499.10

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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.