Finding the Fourth Proportional to 1,620,489,557.54, 2,236,246,439.00 and 915,626,405.36
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Solution
The fourth proportional to 1,620,489,557.54, 2,236,246,439.00 and 915,626,405.36 is: 1,263,547,968.52
Step by Step Solution
- Step 1: Write the proportion equation
1,620,489,557.54 : 2,236,246,439.00 = 915,626,405.36 : x - Step 2: Convert to fraction form
1,620,489,557.54/2,236,246,439.00 = 915,626,405.36/x - Step 3: Cross multiply
1,620,489,557.54x = 2,236,246,439.00 × 915,626,405.36 - Step 4: Simplify right side
1,620,489,557.54x = 2,047,566,288,441,682,688 - Step 5: Solve for x
x = 2,047,566,288,441,682,688/1,620,489,557.54 - Step 6: Final answer
x = 1,263,547,968.52
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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.