Home / 657,041.60-985,562.40-420,845.60

Finding the Fourth Proportional to 657,041.60, 985,562.40 and 420,845.60

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Solution

The fourth proportional to 657,041.60, 985,562.40 and 420,845.60 is: 631,268.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,041.60 : 985,562.40 = 420,845.60 : x
  2. Step 2: Convert to fraction form
    657,041.60/985,562.40 = 420,845.60/x
  3. Step 3: Cross multiply
    657,041.60x = 985,562.40 × 420,845.60
  4. Step 4: Simplify right side
    657,041.60x = 414,769,599,565.44
  5. Step 5: Solve for x
    x = 414,769,599,565.44/657,041.60
  6. Step 6: Final answer
    x = 631,268.40

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Similar ratio
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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.