Finding the Fourth Proportional to 665,689.08, 918,426.55 and 379,006.19
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Solution
The fourth proportional to 665,689.08, 918,426.55 and 379,006.19 is: 522,900.79
Step by Step Solution
- Step 1: Write the proportion equation
665,689.08 : 918,426.55 = 379,006.19 : x - Step 2: Convert to fraction form
665,689.08/918,426.55 = 379,006.19/x - Step 3: Cross multiply
665,689.08x = 918,426.55 × 379,006.19 - Step 4: Simplify right side
665,689.08x = 348,089,346,125.43 - Step 5: Solve for x
x = 348,089,346,125.43/665,689.08 - Step 6: Final answer
x = 522,900.79
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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.