Home / 1,128,079-1,556,749.02-618,782.56

Finding the Fourth Proportional to 1,128,079, 1,556,749.02 and 618,782.56

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Solution

The fourth proportional to 1,128,079, 1,556,749.02 and 618,782.56 is: 853,919.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,079 : 1,556,749.02 = 618,782.56 : x
  2. Step 2: Convert to fraction form
    1,128,079/1,556,749.02 = 618,782.56/x
  3. Step 3: Cross multiply
    1,128,079x = 1,556,749.02 × 618,782.56
  4. Step 4: Simplify right side
    1,128,079x = 963,289,143,873.09
  5. Step 5: Solve for x
    x = 963,289,143,873.09/1,128,079
  6. Step 6: Final answer
    x = 853,919.93

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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.