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Finding the Fourth Proportional to 526,996.94, 727,260.79 and 309,209.32

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Solution

The fourth proportional to 526,996.94, 727,260.79 and 309,209.32 is: 426,711.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,996.94 : 727,260.79 = 309,209.32 : x
  2. Step 2: Convert to fraction form
    526,996.94/727,260.79 = 309,209.32/x
  3. Step 3: Cross multiply
    526,996.94x = 727,260.79 × 309,209.32
  4. Step 4: Simplify right side
    526,996.94x = 224,875,809,983.65
  5. Step 5: Solve for x
    x = 224,875,809,983.65/526,996.94
  6. Step 6: Final answer
    x = 426,711.79

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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.