Home / 1,212,066.90-1,672,665.20-668,222.15

Finding the Fourth Proportional to 1,212,066.90, 1,672,665.20 and 668,222.15

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Solution

The fourth proportional to 1,212,066.90, 1,672,665.20 and 668,222.15 is: 922,153.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212,066.90 : 1,672,665.20 = 668,222.15 : x
  2. Step 2: Convert to fraction form
    1,212,066.90/1,672,665.20 = 668,222.15/x
  3. Step 3: Cross multiply
    1,212,066.90x = 1,672,665.20 × 668,222.15
  4. Step 4: Simplify right side
    1,212,066.90x = 1,117,711,936,174.18
  5. Step 5: Solve for x
    x = 1,117,711,936,174.18/1,212,066.90
  6. Step 6: Final answer
    x = 922,153.67

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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.