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Finding the Fourth Proportional to 952,978,412.80, 1,429,467,619.20 and 856,232,531.20

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Solution

The fourth proportional to 952,978,412.80, 1,429,467,619.20 and 856,232,531.20 is: 1,284,348,796.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    952,978,412.80 : 1,429,467,619.20 = 856,232,531.20 : x
  2. Step 2: Convert to fraction form
    952,978,412.80/1,429,467,619.20 = 856,232,531.20/x
  3. Step 3: Cross multiply
    952,978,412.80x = 1,429,467,619.20 × 856,232,531.20
  4. Step 4: Simplify right side
    952,978,412.80x = 1,223,956,677,856,053,760
  5. Step 5: Solve for x
    x = 1,223,956,677,856,053,760/952,978,412.80
  6. Step 6: Final answer
    x = 1,284,348,796.80

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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.