Finding the Fourth Proportional to 1,185,648,261.81, 1,636,204,349.34 and 657,021,075.99
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Solution
The fourth proportional to 1,185,648,261.81, 1,636,204,349.34 and 657,021,075.99 is: 906,694,486.70
Step by Step Solution
- Step 1: Write the proportion equation
1,185,648,261.81 : 1,636,204,349.34 = 657,021,075.99 : x - Step 2: Convert to fraction form
1,185,648,261.81/1,636,204,349.34 = 657,021,075.99/x - Step 3: Cross multiply
1,185,648,261.81x = 1,636,204,349.34 × 657,021,075.99 - Step 4: Simplify right side
1,185,648,261.81x = 1,075,020,742,142,884,608 - Step 5: Solve for x
x = 1,075,020,742,142,884,608/1,185,648,261.81 - Step 6: Final answer
x = 906,694,486.70
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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.