Home / 1,128,075-1,556,743.50-618,778.56

Finding the Fourth Proportional to 1,128,075, 1,556,743.50 and 618,778.56

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Solution

The fourth proportional to 1,128,075, 1,556,743.50 and 618,778.56 is: 853,914.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,075 : 1,556,743.50 = 618,778.56 : x
  2. Step 2: Convert to fraction form
    1,128,075/1,556,743.50 = 618,778.56/x
  3. Step 3: Cross multiply
    1,128,075x = 1,556,743.50 × 618,778.56
  4. Step 4: Simplify right side
    1,128,075x = 963,279,501,219.36
  5. Step 5: Solve for x
    x = 963,279,501,219.36/1,128,075
  6. Step 6: Final answer
    x = 853,914.41

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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.