Home / 800,809,747.20-1,201,214,620.80-628,817,068.80

Finding the Fourth Proportional to 800,809,747.20, 1,201,214,620.80 and 628,817,068.80

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Solution

The fourth proportional to 800,809,747.20, 1,201,214,620.80 and 628,817,068.80 is: 943,225,603.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    800,809,747.20 : 1,201,214,620.80 = 628,817,068.80 : x
  2. Step 2: Convert to fraction form
    800,809,747.20/1,201,214,620.80 = 628,817,068.80/x
  3. Step 3: Cross multiply
    800,809,747.20x = 1,201,214,620.80 × 628,817,068.80
  4. Step 4: Simplify right side
    800,809,747.20x = 755,344,256,851,159,424
  5. Step 5: Solve for x
    x = 755,344,256,851,159,424/800,809,747.20
  6. Step 6: Final answer
    x = 943,225,603.20

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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.