Home / 639,215.81-882,268.78-367,441.35

Finding the Fourth Proportional to 639,215.81, 882,268.78 and 367,441.35

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Solution

The fourth proportional to 639,215.81, 882,268.78 and 367,441.35 is: 507,155.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,215.81 : 882,268.78 = 367,441.35 : x
  2. Step 2: Convert to fraction form
    639,215.81/882,268.78 = 367,441.35/x
  3. Step 3: Cross multiply
    639,215.81x = 882,268.78 × 367,441.35
  4. Step 4: Simplify right side
    639,215.81x = 324,182,030,667.45
  5. Step 5: Solve for x
    x = 324,182,030,667.45/639,215.81
  6. Step 6: Final answer
    x = 507,155.84

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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.