Finding the Fourth Proportional to 1,617,952,348.28, 2,232,138,959.40 and 939,653,832.84
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Solution
The fourth proportional to 1,617,952,348.28, 2,232,138,959.40 and 939,653,832.84 is: 1,296,353,338.75
Step by Step Solution
- Step 1: Write the proportion equation
1,617,952,348.28 : 2,232,138,959.40 = 939,653,832.84 : x - Step 2: Convert to fraction form
1,617,952,348.28/2,232,138,959.40 = 939,653,832.84/x - Step 3: Cross multiply
1,617,952,348.28x = 2,232,138,959.40 × 939,653,832.84 - Step 4: Simplify right side
1,617,952,348.28x = 2,097,437,928,626,804,992 - Step 5: Solve for x
x = 2,097,437,928,626,804,992/1,617,952,348.28 - Step 6: Final answer
x = 1,296,353,338.75
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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.