Home / 1,424,643.60-2,136,965.40-427,371.60

Finding the Fourth Proportional to 1,424,643.60, 2,136,965.40 and 427,371.60

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Solution

The fourth proportional to 1,424,643.60, 2,136,965.40 and 427,371.60 is: 641,057.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,424,643.60 : 2,136,965.40 = 427,371.60 : x
  2. Step 2: Convert to fraction form
    1,424,643.60/2,136,965.40 = 427,371.60/x
  3. Step 3: Cross multiply
    1,424,643.60x = 2,136,965.40 × 427,371.60
  4. Step 4: Simplify right side
    1,424,643.60x = 913,278,322,142.64
  5. Step 5: Solve for x
    x = 913,278,322,142.64/1,424,643.60
  6. Step 6: Final answer
    x = 641,057.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.