Finding the Fourth Proportional to 678,889.68, 936,868.14 and 372,985.80
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Solution
The fourth proportional to 678,889.68, 936,868.14 and 372,985.80 is: 514,720.61
Step by Step Solution
- Step 1: Write the proportion equation
678,889.68 : 936,868.14 = 372,985.80 : x - Step 2: Convert to fraction form
678,889.68/936,868.14 = 372,985.80/x - Step 3: Cross multiply
678,889.68x = 936,868.14 × 372,985.80 - Step 4: Simplify right side
678,889.68x = 349,438,512,692.41 - Step 5: Solve for x
x = 349,438,512,692.41/678,889.68 - Step 6: Final answer
x = 514,720.61
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.