Home / 1,222,244.05-1,686,684-678,384.54

Finding the Fourth Proportional to 1,222,244.05, 1,686,684 and 678,384.54

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Solution

The fourth proportional to 1,222,244.05, 1,686,684 and 678,384.54 is: 936,163.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,244.05 : 1,686,684 = 678,384.54 : x
  2. Step 2: Convert to fraction form
    1,222,244.05/1,686,684 = 678,384.54/x
  3. Step 3: Cross multiply
    1,222,244.05x = 1,686,684 × 678,384.54
  4. Step 4: Simplify right side
    1,222,244.05x = 1,144,220,349,465.36
  5. Step 5: Solve for x
    x = 1,144,220,349,465.36/1,222,244.05
  6. Step 6: Final answer
    x = 936,163.57

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Half scale
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Double scale
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Similar ratio
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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.