Home / 905,611.40-1,358,417.10-274,443.20

Finding the Fourth Proportional to 905,611.40, 1,358,417.10 and 274,443.20

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Solution

The fourth proportional to 905,611.40, 1,358,417.10 and 274,443.20 is: 411,664.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,611.40 : 1,358,417.10 = 274,443.20 : x
  2. Step 2: Convert to fraction form
    905,611.40/1,358,417.10 = 274,443.20/x
  3. Step 3: Cross multiply
    905,611.40x = 1,358,417.10 × 274,443.20
  4. Step 4: Simplify right side
    905,611.40x = 372,808,335,858.72
  5. Step 5: Solve for x
    x = 372,808,335,858.72/905,611.40
  6. Step 6: Final answer
    x = 411,664.80

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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.