Home / 829,074.40-1,243,611.60-355,679.20

Finding the Fourth Proportional to 829,074.40, 1,243,611.60 and 355,679.20

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Solution

The fourth proportional to 829,074.40, 1,243,611.60 and 355,679.20 is: 533,518.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    829,074.40 : 1,243,611.60 = 355,679.20 : x
  2. Step 2: Convert to fraction form
    829,074.40/1,243,611.60 = 355,679.20/x
  3. Step 3: Cross multiply
    829,074.40x = 1,243,611.60 × 355,679.20
  4. Step 4: Simplify right side
    829,074.40x = 442,326,778,998.72
  5. Step 5: Solve for x
    x = 442,326,778,998.72/829,074.40
  6. Step 6: Final answer
    x = 533,518.80

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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.