Finding the Fourth Proportional to 371,928,049.36, 513,968,577.91 and 278,947,132.00
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Solution
The fourth proportional to 371,928,049.36, 513,968,577.91 and 278,947,132.00 is: 385,477,946.59
Step by Step Solution
- Step 1: Write the proportion equation
371,928,049.36 : 513,968,577.91 = 278,947,132.00 : x - Step 2: Convert to fraction form
371,928,049.36/513,968,577.91 = 278,947,132.00/x - Step 3: Cross multiply
371,928,049.36x = 513,968,577.91 × 278,947,132.00 - Step 4: Simplify right side
371,928,049.36x = 143,370,060,747,805,472 - Step 5: Solve for x
x = 143,370,060,747,805,472/371,928,049.36 - Step 6: Final answer
x = 385,477,946.59
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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.