Home / 811,365.94-1,118,667.09-520,464.61

Finding the Fourth Proportional to 811,365.94, 1,118,667.09 and 520,464.61

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Solution

The fourth proportional to 811,365.94, 1,118,667.09 and 520,464.61 is: 717,588.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,365.94 : 1,118,667.09 = 520,464.61 : x
  2. Step 2: Convert to fraction form
    811,365.94/1,118,667.09 = 520,464.61/x
  3. Step 3: Cross multiply
    811,365.94x = 1,118,667.09 × 520,464.61
  4. Step 4: Simplify right side
    811,365.94x = 582,226,630,716.69
  5. Step 5: Solve for x
    x = 582,226,630,716.69/811,365.94
  6. Step 6: Final answer
    x = 717,588.21

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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.