Finding the Fourth Proportional to 1,320,706.68, 1,980,963.12 and 421,907.06
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Solution
The fourth proportional to 1,320,706.68, 1,980,963.12 and 421,907.06 is: 632,829.63
Step by Step Solution
- Step 1: Write the proportion equation
1,320,706.68 : 1,980,963.12 = 421,907.06 : x - Step 2: Convert to fraction form
1,320,706.68/1,980,963.12 = 421,907.06/x - Step 3: Cross multiply
1,320,706.68x = 1,980,963.12 × 421,907.06 - Step 4: Simplify right side
1,320,706.68x = 835,782,325,927.63 - Step 5: Solve for x
x = 835,782,325,927.63/1,320,706.68 - Step 6: Final answer
x = 632,829.63
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.