Home / 1,128,135-1,556,826.30-618,838.59

Finding the Fourth Proportional to 1,128,135, 1,556,826.30 and 618,838.59

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Solution

The fourth proportional to 1,128,135, 1,556,826.30 and 618,838.59 is: 853,997.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,135 : 1,556,826.30 = 618,838.59 : x
  2. Step 2: Convert to fraction form
    1,128,135/1,556,826.30 = 618,838.59/x
  3. Step 3: Cross multiply
    1,128,135x = 1,556,826.30 × 618,838.59
  4. Step 4: Simplify right side
    1,128,135x = 963,424,192,366.92
  5. Step 5: Solve for x
    x = 963,424,192,366.92/1,128,135
  6. Step 6: Final answer
    x = 853,997.25

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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.