Finding the Fourth Proportional to 677,385.36, 934,579.08 and 390,867.84
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Solution
The fourth proportional to 677,385.36, 934,579.08 and 390,867.84 is: 539,274.88
Step by Step Solution
- Step 1: Write the proportion equation
677,385.36 : 934,579.08 = 390,867.84 : x - Step 2: Convert to fraction form
677,385.36/934,579.08 = 390,867.84/x - Step 3: Cross multiply
677,385.36x = 934,579.08 × 390,867.84 - Step 4: Simplify right side
677,385.36x = 365,296,906,308.79 - Step 5: Solve for x
x = 365,296,906,308.79/677,385.36 - Step 6: Final answer
x = 539,274.88
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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.