Finding the Fourth Proportional to 579,270,624.60, 868,905,936.90 and 334,382,611.80
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Solution
The fourth proportional to 579,270,624.60, 868,905,936.90 and 334,382,611.80 is: 501,573,917.70
Step by Step Solution
- Step 1: Write the proportion equation
579,270,624.60 : 868,905,936.90 = 334,382,611.80 : x - Step 2: Convert to fraction form
579,270,624.60/868,905,936.90 = 334,382,611.80/x - Step 3: Cross multiply
579,270,624.60x = 868,905,936.90 × 334,382,611.80 - Step 4: Simplify right side
579,270,624.60x = 290,547,036,589,147,968 - Step 5: Solve for x
x = 290,547,036,589,147,968/579,270,624.60 - Step 6: Final answer
x = 501,573,917.70
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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.