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Finding the Fourth Proportional to 505,386.36, 697,427.87 and 275,942.93

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Solution

The fourth proportional to 505,386.36, 697,427.87 and 275,942.93 is: 380,798.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,386.36 : 697,427.87 = 275,942.93 : x
  2. Step 2: Convert to fraction form
    505,386.36/697,427.87 = 275,942.93/x
  3. Step 3: Cross multiply
    505,386.36x = 697,427.87 × 275,942.93
  4. Step 4: Simplify right side
    505,386.36x = 192,450,289,911.46
  5. Step 5: Solve for x
    x = 192,450,289,911.46/505,386.36
  6. Step 6: Final answer
    x = 380,798.35

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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.