Home / 729,404.64-1,006,629.12-407,177.64

Finding the Fourth Proportional to 729,404.64, 1,006,629.12 and 407,177.64

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Solution

The fourth proportional to 729,404.64, 1,006,629.12 and 407,177.64 is: 561,933.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    729,404.64 : 1,006,629.12 = 407,177.64 : x
  2. Step 2: Convert to fraction form
    729,404.64/1,006,629.12 = 407,177.64/x
  3. Step 3: Cross multiply
    729,404.64x = 1,006,629.12 × 407,177.64
  4. Step 4: Simplify right side
    729,404.64x = 409,876,869,436.88
  5. Step 5: Solve for x
    x = 409,876,869,436.88/729,404.64
  6. Step 6: Final answer
    x = 561,933.45

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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.