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Finding the Fourth Proportional to 664,329.20, 916,825.04 and 377,832.20

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Solution

The fourth proportional to 664,329.20, 916,825.04 and 377,832.20 is: 521,437.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,329.20 : 916,825.04 = 377,832.20 : x
  2. Step 2: Convert to fraction form
    664,329.20/916,825.04 = 377,832.20/x
  3. Step 3: Cross multiply
    664,329.20x = 916,825.04 × 377,832.20
  4. Step 4: Simplify right side
    664,329.20x = 346,406,021,878.29
  5. Step 5: Solve for x
    x = 346,406,021,878.29/664,329.20
  6. Step 6: Final answer
    x = 521,437.30

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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.