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Finding the Fourth Proportional to 664,025.73, 916,398.81 and 377,572.47

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Solution

The fourth proportional to 664,025.73, 916,398.81 and 377,572.47 is: 521,074.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,025.73 : 916,398.81 = 377,572.47 : x
  2. Step 2: Convert to fraction form
    664,025.73/916,398.81 = 377,572.47/x
  3. Step 3: Cross multiply
    664,025.73x = 916,398.81 × 377,572.47
  4. Step 4: Simplify right side
    664,025.73x = 346,006,962,196.76
  5. Step 5: Solve for x
    x = 346,006,962,196.76/664,025.73
  6. Step 6: Final answer
    x = 521,074.63

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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.