Home / 1,122,111.36-1,683,386.55-412,144.74

Finding the Fourth Proportional to 1,122,111.36, 1,683,386.55 and 412,144.74

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Solution

The fourth proportional to 1,122,111.36, 1,683,386.55 and 412,144.74 is: 618,297.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,122,111.36 : 1,683,386.55 = 412,144.74 : x
  2. Step 2: Convert to fraction form
    1,122,111.36/1,683,386.55 = 412,144.74/x
  3. Step 3: Cross multiply
    1,122,111.36x = 1,683,386.55 × 412,144.74
  4. Step 4: Simplify right side
    1,122,111.36x = 693,798,911,969.25
  5. Step 5: Solve for x
    x = 693,798,911,969.25/1,122,111.36
  6. Step 6: Final answer
    x = 618,297.73

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.