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Finding the Fourth Proportional to 3,180,872.80, 4,769,674.80 and 936,719.20

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Solution

The fourth proportional to 3,180,872.80, 4,769,674.80 and 936,719.20 is: 1,404,597.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,180,872.80 : 4,769,674.80 = 936,719.20 : x
  2. Step 2: Convert to fraction form
    3,180,872.80/4,769,674.80 = 936,719.20/x
  3. Step 3: Cross multiply
    3,180,872.80x = 4,769,674.80 × 936,719.20
  4. Step 4: Simplify right side
    3,180,872.80x = 4,467,845,962,916.16
  5. Step 5: Solve for x
    x = 4,467,845,962,916.16/3,180,872.80
  6. Step 6: Final answer
    x = 1,404,597.49

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1.5x scale

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.