Home / 1,918,780.40-2,647,920.88-1,059,342.32

Finding the Fourth Proportional to 1,918,780.40, 2,647,920.88 and 1,059,342.32

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Solution

The fourth proportional to 1,918,780.40, 2,647,920.88 and 1,059,342.32 is: 1,461,894.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,918,780.40 : 2,647,920.88 = 1,059,342.32 : x
  2. Step 2: Convert to fraction form
    1,918,780.40/2,647,920.88 = 1,059,342.32/x
  3. Step 3: Cross multiply
    1,918,780.40x = 2,647,920.88 × 1,059,342.32
  4. Step 4: Simplify right side
    1,918,780.40x = 2,805,054,648,195.64
  5. Step 5: Solve for x
    x = 2,805,054,648,195.64/1,918,780.40
  6. Step 6: Final answer
    x = 1,461,894.57

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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.