Finding the Fourth Proportional to 557,017,693.25, 768,702,846.40 and 306,130,977.99
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Solution
The fourth proportional to 557,017,693.25, 768,702,846.40 and 306,130,977.99 is: 422,470,878.40
Step by Step Solution
- Step 1: Write the proportion equation
557,017,693.25 : 768,702,846.40 = 306,130,977.99 : x - Step 2: Convert to fraction form
557,017,693.25/768,702,846.40 = 306,130,977.99/x - Step 3: Cross multiply
557,017,693.25x = 768,702,846.40 × 306,130,977.99 - Step 4: Simplify right side
557,017,693.25x = 235,323,754,151,363,456 - Step 5: Solve for x
x = 235,323,754,151,363,456/557,017,693.25 - Step 6: Final answer
x = 422,470,878.40
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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.