Finding the Fourth Proportional to 629,424,307.20, 944,136,460.80 and 357,326,515.20
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Solution
The fourth proportional to 629,424,307.20, 944,136,460.80 and 357,326,515.20 is: 535,989,772.80
Step by Step Solution
- Step 1: Write the proportion equation
629,424,307.20 : 944,136,460.80 = 357,326,515.20 : x - Step 2: Convert to fraction form
629,424,307.20/944,136,460.80 = 357,326,515.20/x - Step 3: Cross multiply
629,424,307.20x = 944,136,460.80 × 357,326,515.20 - Step 4: Simplify right side
629,424,307.20x = 337,364,991,410,925,376 - Step 5: Solve for x
x = 337,364,991,410,925,376/629,424,307.20 - Step 6: Final answer
x = 535,989,772.80
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Double scale
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Similar ratio
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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.