Home / 939,474.78-1,409,387.73-427,177.55

Finding the Fourth Proportional to 939,474.78, 1,409,387.73 and 427,177.55

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Solution

The fourth proportional to 939,474.78, 1,409,387.73 and 427,177.55 is: 640,846.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,474.78 : 1,409,387.73 = 427,177.55 : x
  2. Step 2: Convert to fraction form
    939,474.78/1,409,387.73 = 427,177.55/x
  3. Step 3: Cross multiply
    939,474.78x = 1,409,387.73 × 427,177.55
  4. Step 4: Simplify right side
    939,474.78x = 602,058,790,454.52
  5. Step 5: Solve for x
    x = 602,058,790,454.52/939,474.78
  6. Step 6: Final answer
    x = 640,846.14

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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.