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Finding the Fourth Proportional to 450,674.40, 621,837.36 and 343,054.56

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Solution

The fourth proportional to 450,674.40, 621,837.36 and 343,054.56 is: 473,344.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,674.40 : 621,837.36 = 343,054.56 : x
  2. Step 2: Convert to fraction form
    450,674.40/621,837.36 = 343,054.56/x
  3. Step 3: Cross multiply
    450,674.40x = 621,837.36 × 343,054.56
  4. Step 4: Simplify right side
    450,674.40x = 213,324,141,926.36
  5. Step 5: Solve for x
    x = 213,324,141,926.36/450,674.40
  6. Step 6: Final answer
    x = 473,344.26

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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.