Home / 1,921,669.11-2,882,622.53-642,391.70

Finding the Fourth Proportional to 1,921,669.11, 2,882,622.53 and 642,391.70

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Solution

The fourth proportional to 1,921,669.11, 2,882,622.53 and 642,391.70 is: 963,627.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,921,669.11 : 2,882,622.53 = 642,391.70 : x
  2. Step 2: Convert to fraction form
    1,921,669.11/2,882,622.53 = 642,391.70/x
  3. Step 3: Cross multiply
    1,921,669.11x = 2,882,622.53 × 642,391.70
  4. Step 4: Simplify right side
    1,921,669.11x = 1,851,772,774,697.87
  5. Step 5: Solve for x
    x = 1,851,772,774,697.87/1,921,669.11
  6. Step 6: Final answer
    x = 963,627.28

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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.