Finding the Fourth Proportional to 1,259,742,541.80, 1,889,613,812.70 and 352,003,405.80
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Solution
The fourth proportional to 1,259,742,541.80, 1,889,613,812.70 and 352,003,405.80 is: 528,005,108.70
Step by Step Solution
- Step 1: Write the proportion equation
1,259,742,541.80 : 1,889,613,812.70 = 352,003,405.80 : x - Step 2: Convert to fraction form
1,259,742,541.80/1,889,613,812.70 = 352,003,405.80/x - Step 3: Cross multiply
1,259,742,541.80x = 1,889,613,812.70 × 352,003,405.80 - Step 4: Simplify right side
1,259,742,541.80x = 665,150,497,717,123,328 - Step 5: Solve for x
x = 665,150,497,717,123,328/1,259,742,541.80 - Step 6: Final answer
x = 528,005,108.70
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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.