Finding the Fourth Proportional to 1,071,475,211.66, 1,478,302,203.18 and 619,188,405.95
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Solution
The fourth proportional to 1,071,475,211.66, 1,478,302,203.18 and 619,188,405.95 is: 854,287,224.51
Step by Step Solution
- Step 1: Write the proportion equation
1,071,475,211.66 : 1,478,302,203.18 = 619,188,405.95 : x - Step 2: Convert to fraction form
1,071,475,211.66/1,478,302,203.18 = 619,188,405.95/x - Step 3: Cross multiply
1,071,475,211.66x = 1,478,302,203.18 × 619,188,405.95 - Step 4: Simplify right side
1,071,475,211.66x = 915,347,584,699,397,376 - Step 5: Solve for x
x = 915,347,584,699,397,376/1,071,475,211.66 - Step 6: Final answer
x = 854,287,224.51
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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.