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Finding the Fourth Proportional to 1,275,922.02, 1,913,819.44 and 477,144.84

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Solution

The fourth proportional to 1,275,922.02, 1,913,819.44 and 477,144.84 is: 715,693.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,275,922.02 : 1,913,819.44 = 477,144.84 : x
  2. Step 2: Convert to fraction form
    1,275,922.02/1,913,819.44 = 477,144.84/x
  3. Step 3: Cross multiply
    1,275,922.02x = 1,913,819.44 × 477,144.84
  4. Step 4: Simplify right side
    1,275,922.02x = 913,169,070,487.69
  5. Step 5: Solve for x
    x = 913,169,070,487.69/1,275,922.02
  6. Step 6: Final answer
    x = 715,693.48

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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.