Finding the Fourth Proportional to 1,028,560,126.10, 1,419,388,830.95 and 605,201,208.74
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Solution
The fourth proportional to 1,028,560,126.10, 1,419,388,830.95 and 605,201,208.74 is: 835,163,462.37
Step by Step Solution
- Step 1: Write the proportion equation
1,028,560,126.10 : 1,419,388,830.95 = 605,201,208.74 : x - Step 2: Convert to fraction form
1,028,560,126.10/1,419,388,830.95 = 605,201,208.74/x - Step 3: Cross multiply
1,028,560,126.10x = 1,419,388,830.95 × 605,201,208.74 - Step 4: Simplify right side
1,028,560,126.10x = 859,015,836,168,056,960 - Step 5: Solve for x
x = 859,015,836,168,056,960/1,028,560,126.10 - Step 6: Final answer
x = 835,163,462.37
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Double scale
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.