Home / 727,977.78-1,004,490.72-405,678.78

Finding the Fourth Proportional to 727,977.78, 1,004,490.72 and 405,678.78

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Solution

The fourth proportional to 727,977.78, 1,004,490.72 and 405,678.78 is: 559,770.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    727,977.78 : 1,004,490.72 = 405,678.78 : x
  2. Step 2: Convert to fraction form
    727,977.78/1,004,490.72 = 405,678.78/x
  3. Step 3: Cross multiply
    727,977.78x = 1,004,490.72 × 405,678.78
  4. Step 4: Simplify right side
    727,977.78x = 407,500,569,810.92
  5. Step 5: Solve for x
    x = 407,500,569,810.92/727,977.78
  6. Step 6: Final answer
    x = 559,770.62

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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.