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Finding the Fourth Proportional to 644,164.38, 888,919.92 and 357,667.38

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Solution

The fourth proportional to 644,164.38, 888,919.92 and 357,667.38 is: 493,566.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,164.38 : 888,919.92 = 357,667.38 : x
  2. Step 2: Convert to fraction form
    644,164.38/888,919.92 = 357,667.38/x
  3. Step 3: Cross multiply
    644,164.38x = 888,919.92 × 357,667.38
  4. Step 4: Simplify right side
    644,164.38x = 317,937,658,816.21
  5. Step 5: Solve for x
    x = 317,937,658,816.21/644,164.38
  6. Step 6: Final answer
    x = 493,566.03

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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.