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Finding the Fourth Proportional to 664,468.95, 917,054.78 and 377,933.70

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Solution

The fourth proportional to 664,468.95, 917,054.78 and 377,933.70 is: 521,598.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,468.95 : 917,054.78 = 377,933.70 : x
  2. Step 2: Convert to fraction form
    664,468.95/917,054.78 = 377,933.70/x
  3. Step 3: Cross multiply
    664,468.95x = 917,054.78 × 377,933.70
  4. Step 4: Simplify right side
    664,468.95x = 346,585,904,218.42
  5. Step 5: Solve for x
    x = 346,585,904,218.42/664,468.95
  6. Step 6: Final answer
    x = 521,598.34

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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.