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Finding the Fourth Proportional to 659,910.56, 910,678.96 and 358,104.48

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Solution

The fourth proportional to 659,910.56, 910,678.96 and 358,104.48 is: 494,185.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,910.56 : 910,678.96 = 358,104.48 : x
  2. Step 2: Convert to fraction form
    659,910.56/910,678.96 = 358,104.48/x
  3. Step 3: Cross multiply
    659,910.56x = 910,678.96 × 358,104.48
  4. Step 4: Simplify right side
    659,910.56x = 326,118,215,417.74
  5. Step 5: Solve for x
    x = 326,118,215,417.74/659,910.56
  6. Step 6: Final answer
    x = 494,185.48

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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.