Home / 1,020,138.49-1,407,791.24-561,243.25

Finding the Fourth Proportional to 1,020,138.49, 1,407,791.24 and 561,243.25

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Solution

The fourth proportional to 1,020,138.49, 1,407,791.24 and 561,243.25 is: 774,515.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,020,138.49 : 1,407,791.24 = 561,243.25 : x
  2. Step 2: Convert to fraction form
    1,020,138.49/1,407,791.24 = 561,243.25/x
  3. Step 3: Cross multiply
    1,020,138.49x = 1,407,791.24 × 561,243.25
  4. Step 4: Simplify right side
    1,020,138.49x = 790,113,330,859.13
  5. Step 5: Solve for x
    x = 790,113,330,859.13/1,020,138.49
  6. Step 6: Final answer
    x = 774,515.75

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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.