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Finding the Fourth Proportional to 418,981.92, 628,479.60 and 397,714.56

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Solution

The fourth proportional to 418,981.92, 628,479.60 and 397,714.56 is: 596,578.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,981.92 : 628,479.60 = 397,714.56 : x
  2. Step 2: Convert to fraction form
    418,981.92/628,479.60 = 397,714.56/x
  3. Step 3: Cross multiply
    418,981.92x = 628,479.60 × 397,714.56
  4. Step 4: Simplify right side
    418,981.92x = 249,955,487,582.98
  5. Step 5: Solve for x
    x = 249,955,487,582.98/418,981.92
  6. Step 6: Final answer
    x = 596,578.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.