Home / 712,249.96-982,867.60-389,898.32

Finding the Fourth Proportional to 712,249.96, 982,867.60 and 389,898.32

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Solution

The fourth proportional to 712,249.96, 982,867.60 and 389,898.32 is: 538,039.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,249.96 : 982,867.60 = 389,898.32 : x
  2. Step 2: Convert to fraction form
    712,249.96/982,867.60 = 389,898.32/x
  3. Step 3: Cross multiply
    712,249.96x = 982,867.60 × 389,898.32
  4. Step 4: Simplify right side
    712,249.96x = 383,218,426,022.43
  5. Step 5: Solve for x
    x = 383,218,426,022.43/712,249.96
  6. Step 6: Final answer
    x = 538,039.24

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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.