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Finding the Fourth Proportional to 644,151.90, 888,912.54 and 357,664.62

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Solution

The fourth proportional to 644,151.90, 888,912.54 and 357,664.62 is: 493,567.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,151.90 : 888,912.54 = 357,664.62 : x
  2. Step 2: Convert to fraction form
    644,151.90/888,912.54 = 357,664.62/x
  3. Step 3: Cross multiply
    644,151.90x = 888,912.54 × 357,664.62
  4. Step 4: Simplify right side
    644,151.90x = 317,932,565,832.34
  5. Step 5: Solve for x
    x = 317,932,565,832.34/644,151.90
  6. Step 6: Final answer
    x = 493,567.69

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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.