Home / 666,498,273.38-919,713,031.86-380,388,388.82

Finding the Fourth Proportional to 666,498,273.38, 919,713,031.86 and 380,388,388.82

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Solution

The fourth proportional to 666,498,273.38, 919,713,031.86 and 380,388,388.82 is: 524,904,823.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,498,273.38 : 919,713,031.86 = 380,388,388.82 : x
  2. Step 2: Convert to fraction form
    666,498,273.38/919,713,031.86 = 380,388,388.82/x
  3. Step 3: Cross multiply
    666,498,273.38x = 919,713,031.86 × 380,388,388.82
  4. Step 4: Simplify right side
    666,498,273.38x = 349,848,158,365,982,720
  5. Step 5: Solve for x
    x = 349,848,158,365,982,720/666,498,273.38
  6. Step 6: Final answer
    x = 524,904,823.22

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1.5x scale

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.