Finding the Fourth Proportional to 678,886.84, 936,878.64 and 372,967.12
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Solution
The fourth proportional to 678,886.84, 936,878.64 and 372,967.12 is: 514,702.76
Step by Step Solution
- Step 1: Write the proportion equation
678,886.84 : 936,878.64 = 372,967.12 : x - Step 2: Convert to fraction form
678,886.84/936,878.64 = 372,967.12/x - Step 3: Cross multiply
678,886.84x = 936,878.64 × 372,967.12 - Step 4: Simplify right side
678,886.84x = 349,424,928,150.32 - Step 5: Solve for x
x = 349,424,928,150.32/678,886.84 - Step 6: Final answer
x = 514,702.76
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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.