Home / 1,284,484.56-1,918,914.42-831,515.28

Finding the Fourth Proportional to 1,284,484.56, 1,918,914.42 and 831,515.28

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Solution

The fourth proportional to 1,284,484.56, 1,918,914.42 and 831,515.28 is: 1,242,215.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,284,484.56 : 1,918,914.42 = 831,515.28 : x
  2. Step 2: Convert to fraction form
    1,284,484.56/1,918,914.42 = 831,515.28/x
  3. Step 3: Cross multiply
    1,284,484.56x = 1,918,914.42 × 831,515.28
  4. Step 4: Simplify right side
    1,284,484.56x = 1,595,606,661,242.34
  5. Step 5: Solve for x
    x = 1,595,606,661,242.34/1,284,484.56
  6. Step 6: Final answer
    x = 1,242,215.52

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.