Finding the Fourth Proportional to 644,458,246.20, 966,687,369.30 and 579,960,991.80
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Solution
The fourth proportional to 644,458,246.20, 966,687,369.30 and 579,960,991.80 is: 869,941,487.70
Step by Step Solution
- Step 1: Write the proportion equation
644,458,246.20 : 966,687,369.30 = 579,960,991.80 : x - Step 2: Convert to fraction form
644,458,246.20/966,687,369.30 = 579,960,991.80/x - Step 3: Cross multiply
644,458,246.20x = 966,687,369.30 × 579,960,991.80 - Step 4: Simplify right side
644,458,246.20x = 560,640,965,459,760,768 - Step 5: Solve for x
x = 560,640,965,459,760,768/644,458,246.20 - Step 6: Final answer
x = 869,941,487.70
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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.