Home / 939,477.28-1,409,391.48-427,180.05

Finding the Fourth Proportional to 939,477.28, 1,409,391.48 and 427,180.05

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Solution

The fourth proportional to 939,477.28, 1,409,391.48 and 427,180.05 is: 640,849.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,477.28 : 1,409,391.48 = 427,180.05 : x
  2. Step 2: Convert to fraction form
    939,477.28/1,409,391.48 = 427,180.05/x
  3. Step 3: Cross multiply
    939,477.28x = 1,409,391.48 × 427,180.05
  4. Step 4: Simplify right side
    939,477.28x = 602,063,915,849.02
  5. Step 5: Solve for x
    x = 602,063,915,849.02/939,477.28
  6. Step 6: Final answer
    x = 640,849.89

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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.