Home / 1,130,670.37-1,560,384.82-640,734.78

Finding the Fourth Proportional to 1,130,670.37, 1,560,384.82 and 640,734.78

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Solution

The fourth proportional to 1,130,670.37, 1,560,384.82 and 640,734.78 is: 884,247.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,130,670.37 : 1,560,384.82 = 640,734.78 : x
  2. Step 2: Convert to fraction form
    1,130,670.37/1,560,384.82 = 640,734.78/x
  3. Step 3: Cross multiply
    1,130,670.37x = 1,560,384.82 × 640,734.78
  4. Step 4: Simplify right side
    1,130,670.37x = 999,792,816,556.12
  5. Step 5: Solve for x
    x = 999,792,816,556.12/1,130,670.37
  6. Step 6: Final answer
    x = 884,247.83

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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.