Home / 666,205-919,375.86-364,405.48

Finding the Fourth Proportional to 666,205, 919,375.86 and 364,405.48

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Solution

The fourth proportional to 666,205, 919,375.86 and 364,405.48 is: 502,886.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,205 : 919,375.86 = 364,405.48 : x
  2. Step 2: Convert to fraction form
    666,205/919,375.86 = 364,405.48/x
  3. Step 3: Cross multiply
    666,205x = 919,375.86 × 364,405.48
  4. Step 4: Simplify right side
    666,205x = 335,025,601,563.71
  5. Step 5: Solve for x
    x = 335,025,601,563.71/666,205
  6. Step 6: Final answer
    x = 502,886.65

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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.