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Finding the Fourth Proportional to 6,410,689.20, 8,845,940.57 and 5,107,247.10

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Solution

The fourth proportional to 6,410,689.20, 8,845,940.57 and 5,107,247.10 is: 7,047,355.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,410,689.20 : 8,845,940.57 = 5,107,247.10 : x
  2. Step 2: Convert to fraction form
    6,410,689.20/8,845,940.57 = 5,107,247.10/x
  3. Step 3: Cross multiply
    6,410,689.20x = 8,845,940.57 × 5,107,247.10
  4. Step 4: Simplify right side
    6,410,689.20x = 45,178,404,297,368.61
  5. Step 5: Solve for x
    x = 45,178,404,297,368.61/6,410,689.20
  6. Step 6: Final answer
    x = 7,047,355.27

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1.5x scale

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.