Finding the Fourth Proportional to 910,317,782.64, 1,256,242,369.95 and 492,630,088.44
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Solution
The fourth proportional to 910,317,782.64, 1,256,242,369.95 and 492,630,088.44 is: 679,831,594.65
Step by Step Solution
- Step 1: Write the proportion equation
910,317,782.64 : 1,256,242,369.95 = 492,630,088.44 : x - Step 2: Convert to fraction form
910,317,782.64/1,256,242,369.95 = 492,630,088.44/x - Step 3: Cross multiply
910,317,782.64x = 1,256,242,369.95 × 492,630,088.44 - Step 4: Simplify right side
910,317,782.64x = 618,862,789,810,543,744 - Step 5: Solve for x
x = 618,862,789,810,543,744/910,317,782.64 - Step 6: Final answer
x = 679,831,594.65
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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.