Finding the Fourth Proportional to 419,111,816.68, 578,348,242.73 and 230,929,579.63
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Solution
The fourth proportional to 419,111,816.68, 578,348,242.73 and 230,929,579.63 is: 318,668,458.53
Step by Step Solution
- Step 1: Write the proportion equation
419,111,816.68 : 578,348,242.73 = 230,929,579.63 : x - Step 2: Convert to fraction form
419,111,816.68/578,348,242.73 = 230,929,579.63/x - Step 3: Cross multiply
419,111,816.68x = 578,348,242.73 × 230,929,579.63 - Step 4: Simplify right side
419,111,816.68x = 133,557,716,570,787,584 - Step 5: Solve for x
x = 133,557,716,570,787,584/419,111,816.68 - Step 6: Final answer
x = 318,668,458.53
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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.