Finding the Fourth Proportional to 918,241.31, 1,376,573.12 and 319,124.63
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Solution
The fourth proportional to 918,241.31, 1,376,573.12 and 319,124.63 is: 478,412.79
Step by Step Solution
- Step 1: Write the proportion equation
918,241.31 : 1,376,573.12 = 319,124.63 : x - Step 2: Convert to fraction form
918,241.31/1,376,573.12 = 319,124.63/x - Step 3: Cross multiply
918,241.31x = 1,376,573.12 × 319,124.63 - Step 4: Simplify right side
918,241.31x = 439,298,390,630.47 - Step 5: Solve for x
x = 439,298,390,630.47/918,241.31 - Step 6: Final answer
x = 478,412.79
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.