Finding the Fourth Proportional to 511,534,188.72, 705,888,196.71 and 288,502,539.99
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Solution
The fourth proportional to 511,534,188.72, 705,888,196.71 and 288,502,539.99 is: 398,117,158.52
Step by Step Solution
- Step 1: Write the proportion equation
511,534,188.72 : 705,888,196.71 = 288,502,539.99 : x - Step 2: Convert to fraction form
511,534,188.72/705,888,196.71 = 288,502,539.99/x - Step 3: Cross multiply
511,534,188.72x = 705,888,196.71 × 288,502,539.99 - Step 4: Simplify right side
511,534,188.72x = 203,650,537,699,795,776 - Step 5: Solve for x
x = 203,650,537,699,795,776/511,534,188.72 - Step 6: Final answer
x = 398,117,158.52
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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.