Home / 728,927.80-1,093,391.70-447,532.60

Finding the Fourth Proportional to 728,927.80, 1,093,391.70 and 447,532.60

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Solution

The fourth proportional to 728,927.80, 1,093,391.70 and 447,532.60 is: 671,298.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,927.80 : 1,093,391.70 = 447,532.60 : x
  2. Step 2: Convert to fraction form
    728,927.80/1,093,391.70 = 447,532.60/x
  3. Step 3: Cross multiply
    728,927.80x = 1,093,391.70 × 447,532.60
  4. Step 4: Simplify right side
    728,927.80x = 489,328,430,319.42
  5. Step 5: Solve for x
    x = 489,328,430,319.42/728,927.80
  6. Step 6: Final answer
    x = 671,298.90

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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.