Home / 2,129,063.78-2,938,005.60-1,211,206.70

Finding the Fourth Proportional to 2,129,063.78, 2,938,005.60 and 1,211,206.70

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Solution

The fourth proportional to 2,129,063.78, 2,938,005.60 and 1,211,206.70 is: 1,671,406.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,129,063.78 : 2,938,005.60 = 1,211,206.70 : x
  2. Step 2: Convert to fraction form
    2,129,063.78/2,938,005.60 = 1,211,206.70/x
  3. Step 3: Cross multiply
    2,129,063.78x = 2,938,005.60 × 1,211,206.70
  4. Step 4: Simplify right side
    2,129,063.78x = 3,558,532,067,357.52
  5. Step 5: Solve for x
    x = 3,558,532,067,357.52/2,129,063.78
  6. Step 6: Final answer
    x = 1,671,406.98

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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.