Finding the Fourth Proportional to 896,860,808.55, 1,345,291,212.83 and 858,118,759.65
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Solution
The fourth proportional to 896,860,808.55, 1,345,291,212.83 and 858,118,759.65 is: 1,287,178,139.48
Step by Step Solution
- Step 1: Write the proportion equation
896,860,808.55 : 1,345,291,212.83 = 858,118,759.65 : x - Step 2: Convert to fraction form
896,860,808.55/1,345,291,212.83 = 858,118,759.65/x - Step 3: Cross multiply
896,860,808.55x = 1,345,291,212.83 × 858,118,759.65 - Step 4: Simplify right side
896,860,808.55x = 1,154,419,626,917,433,088 - Step 5: Solve for x
x = 1,154,419,626,917,433,088/896,860,808.55 - Step 6: Final answer
x = 1,287,178,139.48
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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.