Home / 805,883,407.20-1,208,526,512.40-260,642,728.80

Finding the Fourth Proportional to 805,883,407.20, 1,208,526,512.40 and 260,642,728.80

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Solution

The fourth proportional to 805,883,407.20, 1,208,526,512.40 and 260,642,728.80 is: 390,867,519.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,883,407.20 : 1,208,526,512.40 = 260,642,728.80 : x
  2. Step 2: Convert to fraction form
    805,883,407.20/1,208,526,512.40 = 260,642,728.80/x
  3. Step 3: Cross multiply
    805,883,407.20x = 1,208,526,512.40 × 260,642,728.80
  4. Step 4: Simplify right side
    805,883,407.20x = 314,993,648,019,083,072
  5. Step 5: Solve for x
    x = 314,993,648,019,083,072/805,883,407.20
  6. Step 6: Final answer
    x = 390,867,519.05

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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.