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Finding the Fourth Proportional to 661,664.88, 913,095 and 359,863.92

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Solution

The fourth proportional to 661,664.88, 913,095 and 359,863.92 is: 496,610.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,664.88 : 913,095 = 359,863.92 : x
  2. Step 2: Convert to fraction form
    661,664.88/913,095 = 359,863.92/x
  3. Step 3: Cross multiply
    661,664.88x = 913,095 × 359,863.92
  4. Step 4: Simplify right side
    661,664.88x = 328,589,946,032.40
  5. Step 5: Solve for x
    x = 328,589,946,032.40/661,664.88
  6. Step 6: Final answer
    x = 496,610.83

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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.