Finding the Fourth Proportional to 420,876,001.79, 631,347,660.66 and 144,415,964.91
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Solution
The fourth proportional to 420,876,001.79, 631,347,660.66 and 144,415,964.91 is: 216,635,496.50
Step by Step Solution
- Step 1: Write the proportion equation
420,876,001.79 : 631,347,660.66 = 144,415,964.91 : x - Step 2: Convert to fraction form
420,876,001.79/631,347,660.66 = 144,415,964.91/x - Step 3: Cross multiply
420,876,001.79x = 631,347,660.66 × 144,415,964.91 - Step 4: Simplify right side
420,876,001.79x = 91,176,681,610,792,816 - Step 5: Solve for x
x = 91,176,681,610,792,816/420,876,001.79 - Step 6: Final answer
x = 216,635,496.50
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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.