Home / 780,176,907.20-1,170,265,360.80-320,445,012.80

Finding the Fourth Proportional to 780,176,907.20, 1,170,265,360.80 and 320,445,012.80

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Solution

The fourth proportional to 780,176,907.20, 1,170,265,360.80 and 320,445,012.80 is: 480,667,519.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,176,907.20 : 1,170,265,360.80 = 320,445,012.80 : x
  2. Step 2: Convert to fraction form
    780,176,907.20/1,170,265,360.80 = 320,445,012.80/x
  3. Step 3: Cross multiply
    780,176,907.20x = 1,170,265,360.80 × 320,445,012.80
  4. Step 4: Simplify right side
    780,176,907.20x = 375,005,698,520,952,640
  5. Step 5: Solve for x
    x = 375,005,698,520,952,640/780,176,907.20
  6. Step 6: Final answer
    x = 480,667,519.20

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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.