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Finding the Fourth Proportional to 659,997, 910,795.86 and 358,191

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Solution

The fourth proportional to 659,997, 910,795.86 and 358,191 is: 494,303.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,997 : 910,795.86 = 358,191 : x
  2. Step 2: Convert to fraction form
    659,997/910,795.86 = 358,191/x
  3. Step 3: Cross multiply
    659,997x = 910,795.86 × 358,191
  4. Step 4: Simplify right side
    659,997x = 326,238,879,889.26
  5. Step 5: Solve for x
    x = 326,238,879,889.26/659,997
  6. Step 6: Final answer
    x = 494,303.58

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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.