Finding the Fourth Proportional to 392,746,361.70, 542,507,338 and 291,110,078.17
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Solution
The fourth proportional to 392,746,361.70, 542,507,338 and 291,110,078.17 is: 402,115,382.79
Step by Step Solution
- Step 1: Write the proportion equation
392,746,361.70 : 542,507,338 = 291,110,078.17 : x - Step 2: Convert to fraction form
392,746,361.70/542,507,338 = 291,110,078.17/x - Step 3: Cross multiply
392,746,361.70x = 542,507,338 × 291,110,078.17 - Step 4: Simplify right side
392,746,361.70x = 157,929,353,572,978,624 - Step 5: Solve for x
x = 157,929,353,572,978,624/392,746,361.70 - Step 6: Final answer
x = 402,115,382.79
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.