Finding the Fourth Proportional to 858,831,741.29, 1,185,238,544.88 and 646,764,424.31
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Solution
The fourth proportional to 858,831,741.29, 1,185,238,544.88 and 646,764,424.31 is: 892,573,117.99
Step by Step Solution
- Step 1: Write the proportion equation
858,831,741.29 : 1,185,238,544.88 = 646,764,424.31 : x - Step 2: Convert to fraction form
858,831,741.29/1,185,238,544.88 = 646,764,424.31/x - Step 3: Cross multiply
858,831,741.29x = 1,185,238,544.88 × 646,764,424.31 - Step 4: Simplify right side
858,831,741.29x = 766,570,125,143,409,152 - Step 5: Solve for x
x = 766,570,125,143,409,152/858,831,741.29 - Step 6: Final answer
x = 892,573,117.99
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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.