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Finding the Fourth Proportional to 660,076.96, 910,881.84 and 358,264.48

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Solution

The fourth proportional to 660,076.96, 910,881.84 and 358,264.48 is: 494,391.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,076.96 : 910,881.84 = 358,264.48 : x
  2. Step 2: Convert to fraction form
    660,076.96/910,881.84 = 358,264.48/x
  3. Step 3: Cross multiply
    660,076.96x = 910,881.84 × 358,264.48
  4. Step 4: Simplify right side
    660,076.96x = 326,336,608,749.04
  5. Step 5: Solve for x
    x = 326,336,608,749.04/660,076.96
  6. Step 6: Final answer
    x = 494,391.76

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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.