Home / 939,669.28-1,409,678.80-427,371.28

Finding the Fourth Proportional to 939,669.28, 1,409,678.80 and 427,371.28

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Solution

The fourth proportional to 939,669.28, 1,409,678.80 and 427,371.28 is: 641,136.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,669.28 : 1,409,678.80 = 427,371.28 : x
  2. Step 2: Convert to fraction form
    939,669.28/1,409,678.80 = 427,371.28/x
  3. Step 3: Cross multiply
    939,669.28x = 1,409,678.80 × 427,371.28
  4. Step 4: Simplify right side
    939,669.28x = 602,456,233,144.86
  5. Step 5: Solve for x
    x = 602,456,233,144.86/939,669.28
  6. Step 6: Final answer
    x = 641,136.46

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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.