Finding the Fourth Proportional to 1,263,251,435.37, 1,743,169,991.21 and 698,724,166.79
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Solution
The fourth proportional to 1,263,251,435.37, 1,743,169,991.21 and 698,724,166.79 is: 964,174,641.38
Step by Step Solution
- Step 1: Write the proportion equation
1,263,251,435.37 : 1,743,169,991.21 = 698,724,166.79 : x - Step 2: Convert to fraction form
1,263,251,435.37/1,743,169,991.21 = 698,724,166.79/x - Step 3: Cross multiply
1,263,251,435.37x = 1,743,169,991.21 × 698,724,166.79 - Step 4: Simplify right side
1,263,251,435.37x = 1,217,994,999,669,329,408 - Step 5: Solve for x
x = 1,217,994,999,669,329,408/1,263,251,435.37 - Step 6: Final answer
x = 964,174,641.38
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1.5x scale
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.