Home / 856,646,563.40-1,284,969,845.10-210,414,307.40

Finding the Fourth Proportional to 856,646,563.40, 1,284,969,845.10 and 210,414,307.40

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Solution

The fourth proportional to 856,646,563.40, 1,284,969,845.10 and 210,414,307.40 is: 315,621,461.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,646,563.40 : 1,284,969,845.10 = 210,414,307.40 : x
  2. Step 2: Convert to fraction form
    856,646,563.40/1,284,969,845.10 = 210,414,307.40/x
  3. Step 3: Cross multiply
    856,646,563.40x = 1,284,969,845.10 × 210,414,307.40
  4. Step 4: Simplify right side
    856,646,563.40x = 270,376,039,986,601,760
  5. Step 5: Solve for x
    x = 270,376,039,986,601,760/856,646,563.40
  6. Step 6: Final answer
    x = 315,621,461.10

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Double scale
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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.