Finding the Fourth Proportional to 710,071.68, 979,893.74 and 387,781.68
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Solution
The fourth proportional to 710,071.68, 979,893.74 and 387,781.68 is: 535,135.89
Step by Step Solution
- Step 1: Write the proportion equation
710,071.68 : 979,893.74 = 387,781.68 : x - Step 2: Convert to fraction form
710,071.68/979,893.74 = 387,781.68/x - Step 3: Cross multiply
710,071.68x = 979,893.74 × 387,781.68 - Step 4: Simplify right side
710,071.68x = 379,984,841,688.14 - Step 5: Solve for x
x = 379,984,841,688.14/710,071.68 - Step 6: Final answer
x = 535,135.89
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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.