Home / 861,351.60-1,188,653.36-479,378.32

Finding the Fourth Proportional to 861,351.60, 1,188,653.36 and 479,378.32

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Solution

The fourth proportional to 861,351.60, 1,188,653.36 and 479,378.32 is: 661,535.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,351.60 : 1,188,653.36 = 479,378.32 : x
  2. Step 2: Convert to fraction form
    861,351.60/1,188,653.36 = 479,378.32/x
  3. Step 3: Cross multiply
    861,351.60x = 1,188,653.36 × 479,378.32
  4. Step 4: Simplify right side
    861,351.60x = 569,814,650,779.16
  5. Step 5: Solve for x
    x = 569,814,650,779.16/861,351.60
  6. Step 6: Final answer
    x = 661,535.49

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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.