Home / 1,128,090-1,556,764.20-618,793.56

Finding the Fourth Proportional to 1,128,090, 1,556,764.20 and 618,793.56

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Solution

The fourth proportional to 1,128,090, 1,556,764.20 and 618,793.56 is: 853,935.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,090 : 1,556,764.20 = 618,793.56 : x
  2. Step 2: Convert to fraction form
    1,128,090/1,556,764.20 = 618,793.56/x
  3. Step 3: Cross multiply
    1,128,090x = 1,556,764.20 × 618,793.56
  4. Step 4: Simplify right side
    1,128,090x = 963,315,661,398.55
  5. Step 5: Solve for x
    x = 963,315,661,398.55/1,128,090
  6. Step 6: Final answer
    x = 853,935.11

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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.