Home / 280,562,556,526.80-420,843,826,657.80-129,424,140,891.60

Finding the Fourth Proportional to 280,562,556,526.80, 420,843,826,657.80 and 129,424,140,891.60

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Solution

The fourth proportional to 280,562,556,526.80, 420,843,826,657.80 and 129,424,140,891.60 is: 194,136,207,585.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,562,556,526.80 : 420,843,826,657.80 = 129,424,140,891.60 : x
  2. Step 2: Convert to fraction form
    280,562,556,526.80/420,843,826,657.80 = 129,424,140,891.60/x
  3. Step 3: Cross multiply
    280,562,556,526.80x = 420,843,826,657.80 × 129,424,140,891.60
  4. Step 4: Simplify right side
    280,562,556,526.80x = 54,467,350,714,719,198,511,104
  5. Step 5: Solve for x
    x = 54,467,350,714,719,198,511,104/280,562,556,526.80
  6. Step 6: Final answer
    x = 194,136,207,585.91

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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.