Home / 905,600.40-1,358,400.60-274,432.20

Finding the Fourth Proportional to 905,600.40, 1,358,400.60 and 274,432.20

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Solution

The fourth proportional to 905,600.40, 1,358,400.60 and 274,432.20 is: 411,648.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,600.40 : 1,358,400.60 = 274,432.20 : x
  2. Step 2: Convert to fraction form
    905,600.40/1,358,400.60 = 274,432.20/x
  3. Step 3: Cross multiply
    905,600.40x = 1,358,400.60 × 274,432.20
  4. Step 4: Simplify right side
    905,600.40x = 372,788,865,139.32
  5. Step 5: Solve for x
    x = 372,788,865,139.32/905,600.40
  6. Step 6: Final answer
    x = 411,648.30

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Double scale
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Similar ratio
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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.