Home / 1,290,982.40-1,936,012.80-449,561.60

Finding the Fourth Proportional to 1,290,982.40, 1,936,012.80 and 449,561.60

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Solution

The fourth proportional to 1,290,982.40, 1,936,012.80 and 449,561.60 is: 674,181.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,982.40 : 1,936,012.80 = 449,561.60 : x
  2. Step 2: Convert to fraction form
    1,290,982.40/1,936,012.80 = 449,561.60/x
  3. Step 3: Cross multiply
    1,290,982.40x = 1,936,012.80 × 449,561.60
  4. Step 4: Simplify right side
    1,290,982.40x = 870,357,011,988.48
  5. Step 5: Solve for x
    x = 870,357,011,988.48/1,290,982.40
  6. Step 6: Final answer
    x = 674,181.93

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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.