Finding the Fourth Proportional to 858,831,739.79, 1,185,238,542.80 and 646,764,422.81
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Solution
The fourth proportional to 858,831,739.79, 1,185,238,542.80 and 646,764,422.81 is: 892,573,115.92
Step by Step Solution
- Step 1: Write the proportion equation
858,831,739.79 : 1,185,238,542.80 = 646,764,422.81 : x - Step 2: Convert to fraction form
858,831,739.79/1,185,238,542.80 = 646,764,422.81/x - Step 3: Cross multiply
858,831,739.79x = 1,185,238,542.80 × 646,764,422.81 - Step 4: Simplify right side
858,831,739.79x = 766,570,122,028,559,232 - Step 5: Solve for x
x = 766,570,122,028,559,232/858,831,739.79 - Step 6: Final answer
x = 892,573,115.92
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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.