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Finding the Fourth Proportional to 541,921.37, 747,698.79 and 312,460.62

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Solution

The fourth proportional to 541,921.37, 747,698.79 and 312,460.62 is: 431,107.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    541,921.37 : 747,698.79 = 312,460.62 : x
  2. Step 2: Convert to fraction form
    541,921.37/747,698.79 = 312,460.62/x
  3. Step 3: Cross multiply
    541,921.37x = 747,698.79 × 312,460.62
  4. Step 4: Simplify right side
    541,921.37x = 233,626,427,496.65
  5. Step 5: Solve for x
    x = 233,626,427,496.65/541,921.37
  6. Step 6: Final answer
    x = 431,107.62

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1.5x scale

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.