Finding the Fourth Proportional to 870,924,601.80, 1,306,386,902.70 and 850,769,209.80
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Solution
The fourth proportional to 870,924,601.80, 1,306,386,902.70 and 850,769,209.80 is: 1,276,153,814.70
Step by Step Solution
- Step 1: Write the proportion equation
870,924,601.80 : 1,306,386,902.70 = 850,769,209.80 : x - Step 2: Convert to fraction form
870,924,601.80/1,306,386,902.70 = 850,769,209.80/x - Step 3: Cross multiply
870,924,601.80x = 1,306,386,902.70 × 850,769,209.80 - Step 4: Simplify right side
870,924,601.80x = 1,111,433,752,903,148,416 - Step 5: Solve for x
x = 1,111,433,752,903,148,416/870,924,601.80 - Step 6: Final answer
x = 1,276,153,814.70
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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.