Finding the Fourth Proportional to 422,539,437.84, 582,888,257.64 and 281,653,247.76
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Solution
The fourth proportional to 422,539,437.84, 582,888,257.64 and 281,653,247.76 is: 388,537,391.17
Step by Step Solution
- Step 1: Write the proportion equation
422,539,437.84 : 582,888,257.64 = 281,653,247.76 : x - Step 2: Convert to fraction form
422,539,437.84/582,888,257.64 = 281,653,247.76/x - Step 3: Cross multiply
422,539,437.84x = 582,888,257.64 × 281,653,247.76 - Step 4: Simplify right side
422,539,437.84x = 164,172,370,845,473,632 - Step 5: Solve for x
x = 164,172,370,845,473,632/422,539,437.84 - Step 6: Final answer
x = 388,537,391.17
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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.