Finding the Fourth Proportional to 690,628,506.96, 1,036,679,888.64 and 297,349,963.44
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Solution
The fourth proportional to 690,628,506.96, 1,036,679,888.64 and 297,349,963.44 is: 446,342,315.56
Step by Step Solution
- Step 1: Write the proportion equation
690,628,506.96 : 1,036,679,888.64 = 297,349,963.44 : x - Step 2: Convert to fraction form
690,628,506.96/1,036,679,888.64 = 297,349,963.44/x - Step 3: Cross multiply
690,628,506.96x = 1,036,679,888.64 × 297,349,963.44 - Step 4: Simplify right side
690,628,506.96x = 308,256,726,986,087,296 - Step 5: Solve for x
x = 308,256,726,986,087,296/690,628,506.96 - Step 6: Final answer
x = 446,342,315.56
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.