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Finding the Fourth Proportional to 665,092.78, 917,828.02 and 359,169.14

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Solution

The fourth proportional to 665,092.78, 917,828.02 and 359,169.14 is: 495,653.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,092.78 : 917,828.02 = 359,169.14 : x
  2. Step 2: Convert to fraction form
    665,092.78/917,828.02 = 359,169.14/x
  3. Step 3: Cross multiply
    665,092.78x = 917,828.02 × 359,169.14
  4. Step 4: Simplify right side
    665,092.78x = 329,655,496,471.12
  5. Step 5: Solve for x
    x = 329,655,496,471.12/665,092.78
  6. Step 6: Final answer
    x = 495,653.40

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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.