Finding the Fourth Proportional to 1,157,238,959.84, 1,596,988,550.94 and 628,603,365.68
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Solution
The fourth proportional to 1,157,238,959.84, 1,596,988,550.94 and 628,603,365.68 is: 867,471,985.40
Step by Step Solution
- Step 1: Write the proportion equation
1,157,238,959.84 : 1,596,988,550.94 = 628,603,365.68 : x - Step 2: Convert to fraction form
1,157,238,959.84/1,596,988,550.94 = 628,603,365.68/x - Step 3: Cross multiply
1,157,238,959.84x = 1,596,988,550.94 × 628,603,365.68 - Step 4: Simplify right side
1,157,238,959.84x = 1,003,872,378,073,310,080 - Step 5: Solve for x
x = 1,003,872,378,073,310,080/1,157,238,959.84 - Step 6: Final answer
x = 867,471,985.40
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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.