Finding the Fourth Proportional to 553,538,540.75, 763,899,129.47 and 306,035,838.23
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Solution
The fourth proportional to 553,538,540.75, 763,899,129.47 and 306,035,838.23 is: 422,338,271.32
Step by Step Solution
- Step 1: Write the proportion equation
553,538,540.75 : 763,899,129.47 = 306,035,838.23 : x - Step 2: Convert to fraction form
553,538,540.75/763,899,129.47 = 306,035,838.23/x - Step 3: Cross multiply
553,538,540.75x = 763,899,129.47 × 306,035,838.23 - Step 4: Simplify right side
553,538,540.75x = 233,780,510,408,988,576 - Step 5: Solve for x
x = 233,780,510,408,988,576/553,538,540.75 - Step 6: Final answer
x = 422,338,271.32
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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.