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Finding the Fourth Proportional to 660,945.04, 912,102.28 and 359,138.96

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Solution

The fourth proportional to 660,945.04, 912,102.28 and 359,138.96 is: 495,610.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,945.04 : 912,102.28 = 359,138.96 : x
  2. Step 2: Convert to fraction form
    660,945.04/912,102.28 = 359,138.96/x
  3. Step 3: Cross multiply
    660,945.04x = 912,102.28 × 359,138.96
  4. Step 4: Simplify right side
    660,945.04x = 327,571,464,252.83
  5. Step 5: Solve for x
    x = 327,571,464,252.83/660,945.04
  6. Step 6: Final answer
    x = 495,610.75

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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.