Finding the Fourth Proportional to 893,479.80, 1,340,219.70 and 395,815.80
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Solution
The fourth proportional to 893,479.80, 1,340,219.70 and 395,815.80 is: 593,723.70
Step by Step Solution
- Step 1: Write the proportion equation
893,479.80 : 1,340,219.70 = 395,815.80 : x - Step 2: Convert to fraction form
893,479.80/1,340,219.70 = 395,815.80/x - Step 3: Cross multiply
893,479.80x = 1,340,219.70 × 395,815.80 - Step 4: Simplify right side
893,479.80x = 530,480,132,731.26 - Step 5: Solve for x
x = 530,480,132,731.26/893,479.80 - Step 6: Final answer
x = 593,723.70
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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.