Finding the Fourth Proportional to 1,278,154,553.48, 1,763,836,037.86 and 713,648,130.28
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Solution
The fourth proportional to 1,278,154,553.48, 1,763,836,037.86 and 713,648,130.28 is: 984,824,790.64
Step by Step Solution
- Step 1: Write the proportion equation
1,278,154,553.48 : 1,763,836,037.86 = 713,648,130.28 : x - Step 2: Convert to fraction form
1,278,154,553.48/1,763,836,037.86 = 713,648,130.28/x - Step 3: Cross multiply
1,278,154,553.48x = 1,763,836,037.86 × 713,648,130.28 - Step 4: Simplify right side
1,278,154,553.48x = 1,258,758,290,539,272,192 - Step 5: Solve for x
x = 1,258,758,290,539,272,192/1,278,154,553.48 - Step 6: Final answer
x = 984,824,790.64
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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.