Finding the Fourth Proportional to 811,971,590.86, 1,120,531,544.85 and 440,698,072.78
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Solution
The fourth proportional to 811,971,590.86, 1,120,531,544.85 and 440,698,072.78 is: 608,169,174.71
Step by Step Solution
- Step 1: Write the proportion equation
811,971,590.86 : 1,120,531,544.85 = 440,698,072.78 : x - Step 2: Convert to fraction form
811,971,590.86/1,120,531,544.85 = 440,698,072.78/x - Step 3: Cross multiply
811,971,590.86x = 1,120,531,544.85 × 440,698,072.78 - Step 4: Simplify right side
811,971,590.86x = 493,816,092,304,591,040 - Step 5: Solve for x
x = 493,816,092,304,591,040/811,971,590.86 - Step 6: Final answer
x = 608,169,174.71
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Double scale
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.