Finding the Fourth Proportional to 5,220,428.67, 7,830,643.68 and 1,626,485.40
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Solution
The fourth proportional to 5,220,428.67, 7,830,643.68 and 1,626,485.40 is: 2,439,728.31
Step by Step Solution
- Step 1: Write the proportion equation
5,220,428.67 : 7,830,643.68 = 1,626,485.40 : x - Step 2: Convert to fraction form
5,220,428.67/7,830,643.68 = 1,626,485.40/x - Step 3: Cross multiply
5,220,428.67x = 7,830,643.68 × 1,626,485.40 - Step 4: Simplify right side
5,220,428.67x = 12,736,427,618,122.27 - Step 5: Solve for x
x = 12,736,427,618,122.27/5,220,428.67 - Step 6: Final answer
x = 2,439,728.31
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.