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Finding the Fourth Proportional to 414,218.80, 620,453.40 and 414,218.80

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Solution

The fourth proportional to 414,218.80, 620,453.40 and 414,218.80 is: 620,453.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,218.80 : 620,453.40 = 414,218.80 : x
  2. Step 2: Convert to fraction form
    414,218.80/620,453.40 = 414,218.80/x
  3. Step 3: Cross multiply
    414,218.80x = 620,453.40 × 414,218.80
  4. Step 4: Simplify right side
    414,218.80x = 257,003,462,803.92
  5. Step 5: Solve for x
    x = 257,003,462,803.92/414,218.80
  6. Step 6: Final answer
    x = 620,453.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.