Finding the Fourth Proportional to 687,129.74, 948,264.37 and 415,145.08
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Solution
The fourth proportional to 687,129.74, 948,264.37 and 415,145.08 is: 572,915.52
Step by Step Solution
- Step 1: Write the proportion equation
687,129.74 : 948,264.37 = 415,145.08 : x - Step 2: Convert to fraction form
687,129.74/948,264.37 = 415,145.08/x - Step 3: Cross multiply
687,129.74x = 948,264.37 × 415,145.08 - Step 4: Simplify right side
687,129.74x = 393,667,288,782.66 - Step 5: Solve for x
x = 393,667,288,782.66/687,129.74 - Step 6: Final answer
x = 572,915.52
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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.