Finding the Fourth Proportional to 664,398.86, 916,749.70 and 392,511.02
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Solution
The fourth proportional to 664,398.86, 916,749.70 and 392,511.02 is: 541,593.88
Step by Step Solution
- Step 1: Write the proportion equation
664,398.86 : 916,749.70 = 392,511.02 : x - Step 2: Convert to fraction form
664,398.86/916,749.70 = 392,511.02/x - Step 3: Cross multiply
664,398.86x = 916,749.70 × 392,511.02 - Step 4: Simplify right side
664,398.86x = 359,834,354,266.67 - Step 5: Solve for x
x = 359,834,354,266.67/664,398.86 - Step 6: Final answer
x = 541,593.88
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.