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Finding the Fourth Proportional to 554,167.70, 764,736.09 and 312,448.13

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Solution

The fourth proportional to 554,167.70, 764,736.09 and 312,448.13 is: 431,169.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,167.70 : 764,736.09 = 312,448.13 : x
  2. Step 2: Convert to fraction form
    554,167.70/764,736.09 = 312,448.13/x
  3. Step 3: Cross multiply
    554,167.70x = 764,736.09 × 312,448.13
  4. Step 4: Simplify right side
    554,167.70x = 238,940,361,264.01
  5. Step 5: Solve for x
    x = 238,940,361,264.01/554,167.70
  6. Step 6: Final answer
    x = 431,169.77

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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.