Finding the Fourth Proportional to 691,637,187.36, 1,035,793,403.36 and 395,634,885.92
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Solution
The fourth proportional to 691,637,187.36, 1,035,793,403.36 and 395,634,885.92 is: 592,501,404.59
Step by Step Solution
- Step 1: Write the proportion equation
691,637,187.36 : 1,035,793,403.36 = 395,634,885.92 : x - Step 2: Convert to fraction form
691,637,187.36/1,035,793,403.36 = 395,634,885.92/x - Step 3: Cross multiply
691,637,187.36x = 1,035,793,403.36 × 395,634,885.92 - Step 4: Simplify right side
691,637,187.36x = 409,796,004,975,022,144 - Step 5: Solve for x
x = 409,796,004,975,022,144/691,637,187.36 - Step 6: Final answer
x = 592,501,404.59
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.