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Finding the Fourth Proportional to 660,067.96, 910,869.42 and 358,255.48

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Solution

The fourth proportional to 660,067.96, 910,869.42 and 358,255.48 is: 494,379.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,067.96 : 910,869.42 = 358,255.48 : x
  2. Step 2: Convert to fraction form
    660,067.96/910,869.42 = 358,255.48/x
  3. Step 3: Cross multiply
    660,067.96x = 910,869.42 × 358,255.48
  4. Step 4: Simplify right side
    660,067.96x = 326,323,961,279.42
  5. Step 5: Solve for x
    x = 326,323,961,279.42/660,067.96
  6. Step 6: Final answer
    x = 494,379.34

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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.