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Finding the Fourth Proportional to 668,714.50, 922,842.21 and 366,908.50

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Solution

The fourth proportional to 668,714.50, 922,842.21 and 366,908.50 is: 506,342.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,714.50 : 922,842.21 = 366,908.50 : x
  2. Step 2: Convert to fraction form
    668,714.50/922,842.21 = 366,908.50/x
  3. Step 3: Cross multiply
    668,714.50x = 922,842.21 × 366,908.50
  4. Step 4: Simplify right side
    668,714.50x = 338,598,651,007.79
  5. Step 5: Solve for x
    x = 338,598,651,007.79/668,714.50
  6. Step 6: Final answer
    x = 506,342.62

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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.