Finding the Fourth Proportional to 629,877,231.20, 944,815,846.80 and 357,779,439.20
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Solution
The fourth proportional to 629,877,231.20, 944,815,846.80 and 357,779,439.20 is: 536,669,158.80
Step by Step Solution
- Step 1: Write the proportion equation
629,877,231.20 : 944,815,846.80 = 357,779,439.20 : x - Step 2: Convert to fraction form
629,877,231.20/944,815,846.80 = 357,779,439.20/x - Step 3: Cross multiply
629,877,231.20x = 944,815,846.80 × 357,779,439.20 - Step 4: Simplify right side
629,877,231.20x = 338,035,683,815,377,088 - Step 5: Solve for x
x = 338,035,683,815,377,088/629,877,231.20 - Step 6: Final answer
x = 536,669,158.80
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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.