Home / 638,914.23-881,633.55-352,434.32

Finding the Fourth Proportional to 638,914.23, 881,633.55 and 352,434.32

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Solution

The fourth proportional to 638,914.23, 881,633.55 and 352,434.32 is: 486,321.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,914.23 : 881,633.55 = 352,434.32 : x
  2. Step 2: Convert to fraction form
    638,914.23/881,633.55 = 352,434.32/x
  3. Step 3: Cross multiply
    638,914.23x = 881,633.55 × 352,434.32
  4. Step 4: Simplify right side
    638,914.23x = 310,717,920,683.44
  5. Step 5: Solve for x
    x = 310,717,920,683.44/638,914.23
  6. Step 6: Final answer
    x = 486,321.80

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Double scale
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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.