Home / 1,212,065.64-1,672,663.46-668,220.90

Finding the Fourth Proportional to 1,212,065.64, 1,672,663.46 and 668,220.90

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Solution

The fourth proportional to 1,212,065.64, 1,672,663.46 and 668,220.90 is: 922,151.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212,065.64 : 1,672,663.46 = 668,220.90 : x
  2. Step 2: Convert to fraction form
    1,212,065.64/1,672,663.46 = 668,220.90/x
  3. Step 3: Cross multiply
    1,212,065.64x = 1,672,663.46 × 668,220.90
  4. Step 4: Simplify right side
    1,212,065.64x = 1,117,708,682,638.31
  5. Step 5: Solve for x
    x = 1,117,708,682,638.31/1,212,065.64
  6. Step 6: Final answer
    x = 922,151.94

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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.