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Finding the Fourth Proportional to 665,224.86, 918,009.96 and 359,301.06

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Solution

The fourth proportional to 665,224.86, 918,009.96 and 359,301.06 is: 495,835.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,224.86 : 918,009.96 = 359,301.06 : x
  2. Step 2: Convert to fraction form
    665,224.86/918,009.96 = 359,301.06/x
  3. Step 3: Cross multiply
    665,224.86x = 918,009.96 × 359,301.06
  4. Step 4: Simplify right side
    665,224.86x = 329,841,951,718.56
  5. Step 5: Solve for x
    x = 329,841,951,718.56/665,224.86
  6. Step 6: Final answer
    x = 495,835.28

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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.