Finding the Fourth Proportional to 3,778,899,011.70, 5,668,348,517.55 and 2,146,312,259.70
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Solution
The fourth proportional to 3,778,899,011.70, 5,668,348,517.55 and 2,146,312,259.70 is: 3,219,468,389.55
Step by Step Solution
- Step 1: Write the proportion equation
3,778,899,011.70 : 5,668,348,517.55 = 2,146,312,259.70 : x - Step 2: Convert to fraction form
3,778,899,011.70/5,668,348,517.55 = 2,146,312,259.70/x - Step 3: Cross multiply
3,778,899,011.70x = 5,668,348,517.55 × 2,146,312,259.70 - Step 4: Simplify right side
3,778,899,011.70x = 12,166,045,915,469,885,440 - Step 5: Solve for x
x = 12,166,045,915,469,885,440/3,778,899,011.70 - Step 6: Final answer
x = 3,219,468,389.55
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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.