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Finding the Fourth Proportional to 644,051.74, 888,756.71 and 357,553.37

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Solution

The fourth proportional to 644,051.74, 888,756.71 and 357,553.37 is: 493,404.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,051.74 : 888,756.71 = 357,553.37 : x
  2. Step 2: Convert to fraction form
    644,051.74/888,756.71 = 357,553.37/x
  3. Step 3: Cross multiply
    644,051.74x = 888,756.71 × 357,553.37
  4. Step 4: Simplify right side
    644,051.74x = 317,777,954,982.85
  5. Step 5: Solve for x
    x = 317,777,954,982.85/644,051.74
  6. Step 6: Final answer
    x = 493,404.39

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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.