Finding the Fourth Proportional to 919,820.14, 1,379,730.58 and 413,790.06
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Solution
The fourth proportional to 919,820.14, 1,379,730.58 and 413,790.06 is: 620,685.26
Step by Step Solution
- Step 1: Write the proportion equation
919,820.14 : 1,379,730.58 = 413,790.06 : x - Step 2: Convert to fraction form
919,820.14/1,379,730.58 = 413,790.06/x - Step 3: Cross multiply
919,820.14x = 1,379,730.58 × 413,790.06 - Step 4: Simplify right side
919,820.14x = 570,918,799,482.04 - Step 5: Solve for x
x = 570,918,799,482.04/919,820.14 - Step 6: Final answer
x = 620,685.26
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1.5x scale
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.