Home / 905,720.40-1,358,710.20-274,683.60

Finding the Fourth Proportional to 905,720.40, 1,358,710.20 and 274,683.60

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Solution

The fourth proportional to 905,720.40, 1,358,710.20 and 274,683.60 is: 412,064.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,720.40 : 1,358,710.20 = 274,683.60 : x
  2. Step 2: Convert to fraction form
    905,720.40/1,358,710.20 = 274,683.60/x
  3. Step 3: Cross multiply
    905,720.40x = 1,358,710.20 × 274,683.60
  4. Step 4: Simplify right side
    905,720.40x = 373,215,409,092.72
  5. Step 5: Solve for x
    x = 373,215,409,092.72/905,720.40
  6. Step 6: Final answer
    x = 412,064.70

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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.