Home / 1,212,064.90-1,672,662.44-668,220.15

Finding the Fourth Proportional to 1,212,064.90, 1,672,662.44 and 668,220.15

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Solution

The fourth proportional to 1,212,064.90, 1,672,662.44 and 668,220.15 is: 922,150.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212,064.90 : 1,672,662.44 = 668,220.15 : x
  2. Step 2: Convert to fraction form
    1,212,064.90/1,672,662.44 = 668,220.15/x
  3. Step 3: Cross multiply
    1,212,064.90x = 1,672,662.44 × 668,220.15
  4. Step 4: Simplify right side
    1,212,064.90x = 1,117,706,746,556.17
  5. Step 5: Solve for x
    x = 1,117,706,746,556.17/1,212,064.90
  6. Step 6: Final answer
    x = 922,150.91

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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.