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Finding the Fourth Proportional to 665,288.59, 918,098.60 and 359,364.96

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Solution

The fourth proportional to 665,288.59, 918,098.60 and 359,364.96 is: 495,923.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,288.59 : 918,098.60 = 359,364.96 : x
  2. Step 2: Convert to fraction form
    665,288.59/918,098.60 = 359,364.96/x
  3. Step 3: Cross multiply
    665,288.59x = 918,098.60 × 359,364.96
  4. Step 4: Simplify right side
    665,288.59x = 329,932,466,665.06
  5. Step 5: Solve for x
    x = 329,932,466,665.06/665,288.59
  6. Step 6: Final answer
    x = 495,923.83

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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.