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Finding the Fourth Proportional to 414,528.40, 620,917.80 and 370,205.20

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Solution

The fourth proportional to 414,528.40, 620,917.80 and 370,205.20 is: 554,526.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,528.40 : 620,917.80 = 370,205.20 : x
  2. Step 2: Convert to fraction form
    414,528.40/620,917.80 = 370,205.20/x
  3. Step 3: Cross multiply
    414,528.40x = 620,917.80 × 370,205.20
  4. Step 4: Simplify right side
    414,528.40x = 229,866,998,332.56
  5. Step 5: Solve for x
    x = 229,866,998,332.56/414,528.40
  6. Step 6: Final answer
    x = 554,526.54

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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.