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Finding the Fourth Proportional to 1,668,819.15, 2,303,015.70 and 943,775.30

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Solution

The fourth proportional to 1,668,819.15, 2,303,015.70 and 943,775.30 is: 1,302,435.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,668,819.15 : 2,303,015.70 = 943,775.30 : x
  2. Step 2: Convert to fraction form
    1,668,819.15/2,303,015.70 = 943,775.30/x
  3. Step 3: Cross multiply
    1,668,819.15x = 2,303,015.70 × 943,775.30
  4. Step 4: Simplify right side
    1,668,819.15x = 2,173,529,321,657.13
  5. Step 5: Solve for x
    x = 2,173,529,321,657.13/1,668,819.15
  6. Step 6: Final answer
    x = 1,302,435.51

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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.