Finding the Fourth Proportional to 287,782,760.05, 431,674,140.08 and 237,394,280.05
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Solution
The fourth proportional to 287,782,760.05, 431,674,140.08 and 237,394,280.05 is: 356,091,420.08
Step by Step Solution
- Step 1: Write the proportion equation
287,782,760.05 : 431,674,140.08 = 237,394,280.05 : x - Step 2: Convert to fraction form
287,782,760.05/431,674,140.08 = 237,394,280.05/x - Step 3: Cross multiply
287,782,760.05x = 431,674,140.08 × 237,394,280.05 - Step 4: Simplify right side
287,782,760.05x = 102,476,971,699,307,488 - Step 5: Solve for x
x = 102,476,971,699,307,488/287,782,760.05 - Step 6: Final answer
x = 356,091,420.08
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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.