Finding the Fourth Proportional to 557,017,684.12, 768,702,833.81 and 306,130,968.87
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Solution
The fourth proportional to 557,017,684.12, 768,702,833.81 and 306,130,968.87 is: 422,470,865.82
Step by Step Solution
- Step 1: Write the proportion equation
557,017,684.12 : 768,702,833.81 = 306,130,968.87 : x - Step 2: Convert to fraction form
557,017,684.12/768,702,833.81 = 306,130,968.87/x - Step 3: Cross multiply
557,017,684.12x = 768,702,833.81 × 306,130,968.87 - Step 4: Simplify right side
557,017,684.12x = 235,323,743,287,369,888 - Step 5: Solve for x
x = 235,323,743,287,369,888/557,017,684.12 - Step 6: Final answer
x = 422,470,865.82
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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.