Finding the Fourth Proportional to 515,929,860.56, 711,153,369.84 and 348,613,862.96
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Solution
The fourth proportional to 515,929,860.56, 711,153,369.84 and 348,613,862.96 is: 480,526,409.44
Step by Step Solution
- Step 1: Write the proportion equation
515,929,860.56 : 711,153,369.84 = 348,613,862.96 : x - Step 2: Convert to fraction form
515,929,860.56/711,153,369.84 = 348,613,862.96/x - Step 3: Cross multiply
515,929,860.56x = 711,153,369.84 × 348,613,862.96 - Step 4: Simplify right side
515,929,860.56x = 247,917,923,416,943,968 - Step 5: Solve for x
x = 247,917,923,416,943,968/515,929,860.56 - Step 6: Final answer
x = 480,526,409.44
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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.