Home / 804,816,011.20-1,207,112,042.40-259,612,657.60

Finding the Fourth Proportional to 804,816,011.20, 1,207,112,042.40 and 259,612,657.60

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Solution

The fourth proportional to 804,816,011.20, 1,207,112,042.40 and 259,612,657.60 is: 389,382,866.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    804,816,011.20 : 1,207,112,042.40 = 259,612,657.60 : x
  2. Step 2: Convert to fraction form
    804,816,011.20/1,207,112,042.40 = 259,612,657.60/x
  3. Step 3: Cross multiply
    804,816,011.20x = 1,207,112,042.40 × 259,612,657.60
  4. Step 4: Simplify right side
    804,816,011.20x = 313,381,565,348,427,904
  5. Step 5: Solve for x
    x = 313,381,565,348,427,904/804,816,011.20
  6. Step 6: Final answer
    x = 389,382,866.38

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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.