Home / 727,764.90-1,091,647.35-489,819.30

Finding the Fourth Proportional to 727,764.90, 1,091,647.35 and 489,819.30

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Solution

The fourth proportional to 727,764.90, 1,091,647.35 and 489,819.30 is: 734,728.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    727,764.90 : 1,091,647.35 = 489,819.30 : x
  2. Step 2: Convert to fraction form
    727,764.90/1,091,647.35 = 489,819.30/x
  3. Step 3: Cross multiply
    727,764.90x = 1,091,647.35 × 489,819.30
  4. Step 4: Simplify right side
    727,764.90x = 534,709,940,823.86
  5. Step 5: Solve for x
    x = 534,709,940,823.86/727,764.90
  6. Step 6: Final answer
    x = 734,728.95

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Double scale
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Similar ratio
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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.