Finding the Fourth Proportional to 1,248,398,882.01, 1,722,792,491.64 and 683,871,372.09
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Solution
The fourth proportional to 1,248,398,882.01, 1,722,792,491.64 and 683,871,372.09 is: 943,743,607.96
Step by Step Solution
- Step 1: Write the proportion equation
1,248,398,882.01 : 1,722,792,491.64 = 683,871,372.09 : x - Step 2: Convert to fraction form
1,248,398,882.01/1,722,792,491.64 = 683,871,372.09/x - Step 3: Cross multiply
1,248,398,882.01x = 1,722,792,491.64 × 683,871,372.09 - Step 4: Simplify right side
1,248,398,882.01x = 1,178,168,465,084,196,864 - Step 5: Solve for x
x = 1,178,168,465,084,196,864/1,248,398,882.01 - Step 6: Final answer
x = 943,743,607.96
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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.