Finding the Fourth Proportional to 687,224.05, 948,482.94 and 381,398.65
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Solution
The fourth proportional to 687,224.05, 948,482.94 and 381,398.65 is: 526,393.27
Step by Step Solution
- Step 1: Write the proportion equation
687,224.05 : 948,482.94 = 381,398.65 : x - Step 2: Convert to fraction form
687,224.05/948,482.94 = 381,398.65/x - Step 3: Cross multiply
687,224.05x = 948,482.94 × 381,398.65 - Step 4: Simplify right side
687,224.05x = 361,750,112,864.03 - Step 5: Solve for x
x = 361,750,112,864.03/687,224.05 - Step 6: Final answer
x = 526,393.27
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1.5x scale
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.