Finding the Fourth Proportional to 487,664,405.79, 672,978,641.88 and 264,646,038.99
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Solution
The fourth proportional to 487,664,405.79, 672,978,641.88 and 264,646,038.99 is: 365,212,489.95
Step by Step Solution
- Step 1: Write the proportion equation
487,664,405.79 : 672,978,641.88 = 264,646,038.99 : x - Step 2: Convert to fraction form
487,664,405.79/672,978,641.88 = 264,646,038.99/x - Step 3: Cross multiply
487,664,405.79x = 672,978,641.88 × 264,646,038.99 - Step 4: Simplify right side
487,664,405.79x = 178,101,131,898,411,744 - Step 5: Solve for x
x = 178,101,131,898,411,744/487,664,405.79 - Step 6: Final answer
x = 365,212,489.95
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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.