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Finding the Fourth Proportional to 666,717.30, 920,069.87 and 360,793.68

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Solution

The fourth proportional to 666,717.30, 920,069.87 and 360,793.68 is: 497,895.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,717.30 : 920,069.87 = 360,793.68 : x
  2. Step 2: Convert to fraction form
    666,717.30/920,069.87 = 360,793.68/x
  3. Step 3: Cross multiply
    666,717.30x = 920,069.87 × 360,793.68
  4. Step 4: Simplify right side
    666,717.30x = 331,955,394,254.42
  5. Step 5: Solve for x
    x = 331,955,394,254.42/666,717.30
  6. Step 6: Final answer
    x = 497,895.28

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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.