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Finding the Fourth Proportional to 709,117.44, 978,739.86 and 450,942.06

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Solution

The fourth proportional to 709,117.44, 978,739.86 and 450,942.06 is: 622,400.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,117.44 : 978,739.86 = 450,942.06 : x
  2. Step 2: Convert to fraction form
    709,117.44/978,739.86 = 450,942.06/x
  3. Step 3: Cross multiply
    709,117.44x = 978,739.86 × 450,942.06
  4. Step 4: Simplify right side
    709,117.44x = 441,354,968,672.51
  5. Step 5: Solve for x
    x = 441,354,968,672.51/709,117.44
  6. Step 6: Final answer
    x = 622,400.39

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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.