Home / 660,183,619.80-990,275,429.70-315,809,851.80

Finding the Fourth Proportional to 660,183,619.80, 990,275,429.70 and 315,809,851.80

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Solution

The fourth proportional to 660,183,619.80, 990,275,429.70 and 315,809,851.80 is: 473,714,777.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,183,619.80 : 990,275,429.70 = 315,809,851.80 : x
  2. Step 2: Convert to fraction form
    660,183,619.80/990,275,429.70 = 315,809,851.80/x
  3. Step 3: Cross multiply
    660,183,619.80x = 990,275,429.70 × 315,809,851.80
  4. Step 4: Simplify right side
    660,183,619.80x = 312,738,736,694,738,368
  5. Step 5: Solve for x
    x = 312,738,736,694,738,368/660,183,619.80
  6. Step 6: Final answer
    x = 473,714,777.70

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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.