Home / 839,808,112.20-1,259,712,168.30-257,632,211.40

Finding the Fourth Proportional to 839,808,112.20, 1,259,712,168.30 and 257,632,211.40

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Solution

The fourth proportional to 839,808,112.20, 1,259,712,168.30 and 257,632,211.40 is: 386,448,317.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,808,112.20 : 1,259,712,168.30 = 257,632,211.40 : x
  2. Step 2: Convert to fraction form
    839,808,112.20/1,259,712,168.30 = 257,632,211.40/x
  3. Step 3: Cross multiply
    839,808,112.20x = 1,259,712,168.30 × 257,632,211.40
  4. Step 4: Simplify right side
    839,808,112.20x = 324,542,431,646,617,984
  5. Step 5: Solve for x
    x = 324,542,431,646,617,984/839,808,112.20
  6. Step 6: Final answer
    x = 386,448,317.10

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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.