Home / 393,142,912.20-589,714,368.30-263,812,480.20

Finding the Fourth Proportional to 393,142,912.20, 589,714,368.30 and 263,812,480.20

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Solution

The fourth proportional to 393,142,912.20, 589,714,368.30 and 263,812,480.20 is: 395,718,720.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,142,912.20 : 589,714,368.30 = 263,812,480.20 : x
  2. Step 2: Convert to fraction form
    393,142,912.20/589,714,368.30 = 263,812,480.20/x
  3. Step 3: Cross multiply
    393,142,912.20x = 589,714,368.30 × 263,812,480.20
  4. Step 4: Simplify right side
    393,142,912.20x = 155,574,010,110,799,232
  5. Step 5: Solve for x
    x = 155,574,010,110,799,232/393,142,912.20
  6. Step 6: Final answer
    x = 395,718,720.30

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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.