Finding the Fourth Proportional to 788,941,640.70, 1,183,412,461.05 and 358,120,136.70
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Solution
The fourth proportional to 788,941,640.70, 1,183,412,461.05 and 358,120,136.70 is: 537,180,205.05
Step by Step Solution
- Step 1: Write the proportion equation
788,941,640.70 : 1,183,412,461.05 = 358,120,136.70 : x - Step 2: Convert to fraction form
788,941,640.70/1,183,412,461.05 = 358,120,136.70/x - Step 3: Cross multiply
788,941,640.70x = 1,183,412,461.05 × 358,120,136.70 - Step 4: Simplify right side
788,941,640.70x = 423,803,832,323,709,376 - Step 5: Solve for x
x = 423,803,832,323,709,376/788,941,640.70 - Step 6: Final answer
x = 537,180,205.05
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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.