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Finding the Fourth Proportional to 664,227.48, 916,654.14 and 377,788.80

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Solution

The fourth proportional to 664,227.48, 916,654.14 and 377,788.80 is: 521,360.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,227.48 : 916,654.14 = 377,788.80 : x
  2. Step 2: Convert to fraction form
    664,227.48/916,654.14 = 377,788.80/x
  3. Step 3: Cross multiply
    664,227.48x = 916,654.14 × 377,788.80
  4. Step 4: Simplify right side
    664,227.48x = 346,301,667,565.63
  5. Step 5: Solve for x
    x = 346,301,667,565.63/664,227.48
  6. Step 6: Final answer
    x = 521,360.04

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Double scale
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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.