Home / 1,128,078-1,556,747.64-618,781.56

Finding the Fourth Proportional to 1,128,078, 1,556,747.64 and 618,781.56

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Solution

The fourth proportional to 1,128,078, 1,556,747.64 and 618,781.56 is: 853,918.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,078 : 1,556,747.64 = 618,781.56 : x
  2. Step 2: Convert to fraction form
    1,128,078/1,556,747.64 = 618,781.56/x
  3. Step 3: Cross multiply
    1,128,078x = 1,556,747.64 × 618,781.56
  4. Step 4: Simplify right side
    1,128,078x = 963,286,733,205.52
  5. Step 5: Solve for x
    x = 963,286,733,205.52/1,128,078
  6. Step 6: Final answer
    x = 853,918.55

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1.5x scale

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.