Home / 388,039,763.80-582,059,645.70-193,981,130.20

Finding the Fourth Proportional to 388,039,763.80, 582,059,645.70 and 193,981,130.20

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Solution

The fourth proportional to 388,039,763.80, 582,059,645.70 and 193,981,130.20 is: 290,971,695.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,039,763.80 : 582,059,645.70 = 193,981,130.20 : x
  2. Step 2: Convert to fraction form
    388,039,763.80/582,059,645.70 = 193,981,130.20/x
  3. Step 3: Cross multiply
    388,039,763.80x = 582,059,645.70 × 193,981,130.20
  4. Step 4: Simplify right side
    388,039,763.80x = 112,908,587,916,697,568
  5. Step 5: Solve for x
    x = 112,908,587,916,697,568/388,039,763.80
  6. Step 6: Final answer
    x = 290,971,695.30

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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.