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Finding the Fourth Proportional to 505,398.69, 697,453.59 and 275,957.58

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Solution

The fourth proportional to 505,398.69, 697,453.59 and 275,957.58 is: 380,823.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,398.69 : 697,453.59 = 275,957.58 : x
  2. Step 2: Convert to fraction form
    505,398.69/697,453.59 = 275,957.58/x
  3. Step 3: Cross multiply
    505,398.69x = 697,453.59 × 275,957.58
  4. Step 4: Simplify right side
    505,398.69x = 192,467,603,478.92
  5. Step 5: Solve for x
    x = 192,467,603,478.92/505,398.69
  6. Step 6: Final answer
    x = 380,823.32

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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.