Home / 1,128,103.75-1,556,783.27-618,807.43

Finding the Fourth Proportional to 1,128,103.75, 1,556,783.27 and 618,807.43

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Solution

The fourth proportional to 1,128,103.75, 1,556,783.27 and 618,807.43 is: 853,954.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,103.75 : 1,556,783.27 = 618,807.43 : x
  2. Step 2: Convert to fraction form
    1,128,103.75/1,556,783.27 = 618,807.43/x
  3. Step 3: Cross multiply
    1,128,103.75x = 1,556,783.27 × 618,807.43
  4. Step 4: Simplify right side
    1,128,103.75x = 963,349,051,281.66
  5. Step 5: Solve for x
    x = 963,349,051,281.66/1,128,103.75
  6. Step 6: Final answer
    x = 853,954.30

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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.