Home / 638,322.35-880,884.85-351,848.59

Finding the Fourth Proportional to 638,322.35, 880,884.85 and 351,848.59

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Solution

The fourth proportional to 638,322.35, 880,884.85 and 351,848.59 is: 485,551.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,322.35 : 880,884.85 = 351,848.59 : x
  2. Step 2: Convert to fraction form
    638,322.35/880,884.85 = 351,848.59/x
  3. Step 3: Cross multiply
    638,322.35x = 880,884.85 × 351,848.59
  4. Step 4: Simplify right side
    638,322.35x = 309,938,089,343.03
  5. Step 5: Solve for x
    x = 309,938,089,343.03/638,322.35
  6. Step 6: Final answer
    x = 485,551.05

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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.