Finding the Fourth Proportional to 315,759,124.87, 471,325,943.56 and 278,483,853.13
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Solution
The fourth proportional to 315,759,124.87, 471,325,943.56 and 278,483,853.13 is: 415,686,054.67
Step by Step Solution
- Step 1: Write the proportion equation
315,759,124.87 : 471,325,943.56 = 278,483,853.13 : x - Step 2: Convert to fraction form
315,759,124.87/471,325,943.56 = 278,483,853.13/x - Step 3: Cross multiply
315,759,124.87x = 471,325,943.56 × 278,483,853.13 - Step 4: Simplify right side
315,759,124.87x = 131,256,664,842,721,712 - Step 5: Solve for x
x = 131,256,664,842,721,712/315,759,124.87 - Step 6: Final answer
x = 415,686,054.67
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.