Finding the Fourth Proportional to 491,055,643.91, 677,555,628.74 and 282,171,430.26
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Solution
The fourth proportional to 491,055,643.91, 677,555,628.74 and 282,171,430.26 is: 389,338,445.07
Step by Step Solution
- Step 1: Write the proportion equation
491,055,643.91 : 677,555,628.74 = 282,171,430.26 : x - Step 2: Convert to fraction form
491,055,643.91/677,555,628.74 = 282,171,430.26/x - Step 3: Cross multiply
491,055,643.91x = 677,555,628.74 × 282,171,430.26 - Step 4: Simplify right side
491,055,643.91x = 191,186,840,842,984,768 - Step 5: Solve for x
x = 191,186,840,842,984,768/491,055,643.91 - Step 6: Final answer
x = 389,338,445.07
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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.