Home / 656,444.80-984,667.20-420,054.40

Finding the Fourth Proportional to 656,444.80, 984,667.20 and 420,054.40

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Solution

The fourth proportional to 656,444.80, 984,667.20 and 420,054.40 is: 630,081.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,444.80 : 984,667.20 = 420,054.40 : x
  2. Step 2: Convert to fraction form
    656,444.80/984,667.20 = 420,054.40/x
  3. Step 3: Cross multiply
    656,444.80x = 984,667.20 × 420,054.40
  4. Step 4: Simplify right side
    656,444.80x = 413,613,789,895.68
  5. Step 5: Solve for x
    x = 413,613,789,895.68/656,444.80
  6. Step 6: Final answer
    x = 630,081.60

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Similar ratio
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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.