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Finding the Fourth Proportional to 936,900, 1,405,388.88 and 272,052

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Solution

The fourth proportional to 936,900, 1,405,388.88 and 272,052 is: 408,089.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    936,900 : 1,405,388.88 = 272,052 : x
  2. Step 2: Convert to fraction form
    936,900/1,405,388.88 = 272,052/x
  3. Step 3: Cross multiply
    936,900x = 1,405,388.88 × 272,052
  4. Step 4: Simplify right side
    936,900x = 382,338,855,581.76
  5. Step 5: Solve for x
    x = 382,338,855,581.76/936,900
  6. Step 6: Final answer
    x = 408,089.29

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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.