Home / 3,178,747.60-4,768,121.40-782,573.20

Finding the Fourth Proportional to 3,178,747.60, 4,768,121.40 and 782,573.20

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Solution

The fourth proportional to 3,178,747.60, 4,768,121.40 and 782,573.20 is: 1,173,859.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,178,747.60 : 4,768,121.40 = 782,573.20 : x
  2. Step 2: Convert to fraction form
    3,178,747.60/4,768,121.40 = 782,573.20/x
  3. Step 3: Cross multiply
    3,178,747.60x = 4,768,121.40 × 782,573.20
  4. Step 4: Simplify right side
    3,178,747.60x = 3,731,404,021,986.48
  5. Step 5: Solve for x
    x = 3,731,404,021,986.48/3,178,747.60
  6. Step 6: Final answer
    x = 1,173,859.80

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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.