Finding the Fourth Proportional to 394,849,796.18, 545,460,289.42 and 315,360,494.58
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Solution
The fourth proportional to 394,849,796.18, 545,460,289.42 and 315,360,494.58 is: 435,650,792.55
Step by Step Solution
- Step 1: Write the proportion equation
394,849,796.18 : 545,460,289.42 = 315,360,494.58 : x - Step 2: Convert to fraction form
394,849,796.18/545,460,289.42 = 315,360,494.58/x - Step 3: Cross multiply
394,849,796.18x = 545,460,289.42 × 315,360,494.58 - Step 4: Simplify right side
394,849,796.18x = 172,016,626,645,241,120 - Step 5: Solve for x
x = 172,016,626,645,241,120/394,849,796.18 - Step 6: Final answer
x = 435,650,792.55
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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.