Finding the Fourth Proportional to 728,915.62, 1,006,103.63 and 423,090.53
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Solution
The fourth proportional to 728,915.62, 1,006,103.63 and 423,090.53 is: 583,981.06
Step by Step Solution
- Step 1: Write the proportion equation
728,915.62 : 1,006,103.63 = 423,090.53 : x - Step 2: Convert to fraction form
728,915.62/1,006,103.63 = 423,090.53/x - Step 3: Cross multiply
728,915.62x = 1,006,103.63 × 423,090.53 - Step 4: Simplify right side
728,915.62x = 425,672,921,926.13 - Step 5: Solve for x
x = 425,672,921,926.13/728,915.62 - Step 6: Final answer
x = 583,981.06
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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.