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Finding the Fourth Proportional to 3,315,709.72, 4,973,279.65 and 2,018,525.40

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Solution

The fourth proportional to 3,315,709.72, 4,973,279.65 and 2,018,525.40 is: 3,027,614.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,315,709.72 : 4,973,279.65 = 2,018,525.40 : x
  2. Step 2: Convert to fraction form
    3,315,709.72/4,973,279.65 = 2,018,525.40/x
  3. Step 3: Cross multiply
    3,315,709.72x = 4,973,279.65 × 2,018,525.40
  4. Step 4: Simplify right side
    3,315,709.72x = 10,038,691,289,781.80
  5. Step 5: Solve for x
    x = 10,038,691,289,781.80/3,315,709.72
  6. Step 6: Final answer
    x = 3,027,614.64

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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.