Finding the Fourth Proportional to 787,731.05, 1,087,063.31 and 430,035.05
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Solution
The fourth proportional to 787,731.05, 1,087,063.31 and 430,035.05 is: 593,445.34
Step by Step Solution
- Step 1: Write the proportion equation
787,731.05 : 1,087,063.31 = 430,035.05 : x - Step 2: Convert to fraction form
787,731.05/1,087,063.31 = 430,035.05/x - Step 3: Cross multiply
787,731.05x = 1,087,063.31 × 430,035.05 - Step 4: Simplify right side
787,731.05x = 467,475,320,508.79 - Step 5: Solve for x
x = 467,475,320,508.79/787,731.05 - Step 6: Final answer
x = 593,445.34
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1.5x scale
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.