Home / 1,921,680.40-2,881,208.40-911,286.40

Finding the Fourth Proportional to 1,921,680.40, 2,881,208.40 and 911,286.40

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Solution

The fourth proportional to 1,921,680.40, 2,881,208.40 and 911,286.40 is: 1,366,307.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,921,680.40 : 2,881,208.40 = 911,286.40 : x
  2. Step 2: Convert to fraction form
    1,921,680.40/2,881,208.40 = 911,286.40/x
  3. Step 3: Cross multiply
    1,921,680.40x = 2,881,208.40 × 911,286.40
  4. Step 4: Simplify right side
    1,921,680.40x = 2,625,606,030,485.76
  5. Step 5: Solve for x
    x = 2,625,606,030,485.76/1,921,680.40
  6. Step 6: Final answer
    x = 1,366,307.34

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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.