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Finding the Fourth Proportional to 665,300.05, 918,114.44 and 359,376.44

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Solution

The fourth proportional to 665,300.05, 918,114.44 and 359,376.44 is: 495,939.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,300.05 : 918,114.44 = 359,376.44 : x
  2. Step 2: Convert to fraction form
    665,300.05/918,114.44 = 359,376.44/x
  3. Step 3: Cross multiply
    665,300.05x = 918,114.44 × 359,376.44
  4. Step 4: Simplify right side
    665,300.05x = 329,948,692,572.34
  5. Step 5: Solve for x
    x = 329,948,692,572.34/665,300.05
  6. Step 6: Final answer
    x = 495,939.68

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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.