Home / 859,234.40-1,288,365.60-326,772.80

Finding the Fourth Proportional to 859,234.40, 1,288,365.60 and 326,772.80

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Solution

The fourth proportional to 859,234.40, 1,288,365.60 and 326,772.80 is: 489,974.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,234.40 : 1,288,365.60 = 326,772.80 : x
  2. Step 2: Convert to fraction form
    859,234.40/1,288,365.60 = 326,772.80/x
  3. Step 3: Cross multiply
    859,234.40x = 1,288,365.60 × 326,772.80
  4. Step 4: Simplify right side
    859,234.40x = 421,002,834,535.68
  5. Step 5: Solve for x
    x = 421,002,834,535.68/859,234.40
  6. Step 6: Final answer
    x = 489,974.37

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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.