Finding the Fourth Proportional to 1,388,588.34, 1,915,413.99 and 917,098.98
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Solution
The fourth proportional to 1,388,588.34, 1,915,413.99 and 917,098.98 is: 1,265,043.19
Step by Step Solution
- Step 1: Write the proportion equation
1,388,588.34 : 1,915,413.99 = 917,098.98 : x - Step 2: Convert to fraction form
1,388,588.34/1,915,413.99 = 917,098.98/x - Step 3: Cross multiply
1,388,588.34x = 1,915,413.99 × 917,098.98 - Step 4: Simplify right side
1,388,588.34x = 1,756,624,216,506.73 - Step 5: Solve for x
x = 1,756,624,216,506.73/1,388,588.34 - Step 6: Final answer
x = 1,265,043.19
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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.