Finding the Fourth Proportional to 687,442.51, 948,239.14 and 407,841.75
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Solution
The fourth proportional to 687,442.51, 948,239.14 and 407,841.75 is: 562,565.60
Step by Step Solution
- Step 1: Write the proportion equation
687,442.51 : 948,239.14 = 407,841.75 : x - Step 2: Convert to fraction form
687,442.51/948,239.14 = 407,841.75/x - Step 3: Cross multiply
687,442.51x = 948,239.14 × 407,841.75 - Step 4: Simplify right side
687,442.51x = 386,731,510,276.10 - Step 5: Solve for x
x = 386,731,510,276.10/687,442.51 - Step 6: Final answer
x = 562,565.60
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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.