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Finding the Fourth Proportional to 7,223,408.88, 9,969,319.80 and 4,470,979.20

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Solution

The fourth proportional to 7,223,408.88, 9,969,319.80 and 4,470,979.20 is: 6,170,579.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,223,408.88 : 9,969,319.80 = 4,470,979.20 : x
  2. Step 2: Convert to fraction form
    7,223,408.88/9,969,319.80 = 4,470,979.20/x
  3. Step 3: Cross multiply
    7,223,408.88x = 9,969,319.80 × 4,470,979.20
  4. Step 4: Simplify right side
    7,223,408.88x = 44,572,621,463,948.16
  5. Step 5: Solve for x
    x = 44,572,621,463,948.16/7,223,408.88
  6. Step 6: Final answer
    x = 6,170,579.88

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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.