Home / 939,670.28-1,409,680.30-427,372.28

Finding the Fourth Proportional to 939,670.28, 1,409,680.30 and 427,372.28

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Solution

The fourth proportional to 939,670.28, 1,409,680.30 and 427,372.28 is: 641,137.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,670.28 : 1,409,680.30 = 427,372.28 : x
  2. Step 2: Convert to fraction form
    939,670.28/1,409,680.30 = 427,372.28/x
  3. Step 3: Cross multiply
    939,670.28x = 1,409,680.30 × 427,372.28
  4. Step 4: Simplify right side
    939,670.28x = 602,458,283,882.08
  5. Step 5: Solve for x
    x = 602,458,283,882.08/939,670.28
  6. Step 6: Final answer
    x = 641,137.96

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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.