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Finding the Fourth Proportional to 644,090.40, 888,799.50 and 357,593.40

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Solution

The fourth proportional to 644,090.40, 888,799.50 and 357,593.40 is: 493,453.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,090.40 : 888,799.50 = 357,593.40 : x
  2. Step 2: Convert to fraction form
    644,090.40/888,799.50 = 357,593.40/x
  3. Step 3: Cross multiply
    644,090.40x = 888,799.50 × 357,593.40
  4. Step 4: Simplify right side
    644,090.40x = 317,828,835,123.30
  5. Step 5: Solve for x
    x = 317,828,835,123.30/644,090.40
  6. Step 6: Final answer
    x = 493,453.77

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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.