Finding the Fourth Proportional to 512,986,379.40, 769,479,569.10 and 149,492,593.80
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Solution
The fourth proportional to 512,986,379.40, 769,479,569.10 and 149,492,593.80 is: 224,238,890.70
Step by Step Solution
- Step 1: Write the proportion equation
512,986,379.40 : 769,479,569.10 = 149,492,593.80 : x - Step 2: Convert to fraction form
512,986,379.40/769,479,569.10 = 149,492,593.80/x - Step 3: Cross multiply
512,986,379.40x = 769,479,569.10 × 149,492,593.80 - Step 4: Simplify right side
512,986,379.40x = 115,031,496,660,865,344 - Step 5: Solve for x
x = 115,031,496,660,865,344/512,986,379.40 - Step 6: Final answer
x = 224,238,890.70
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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.