Finding the Fourth Proportional to 828,931.20, 1,237,344.96 and 711,358.08
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Solution
The fourth proportional to 828,931.20, 1,237,344.96 and 711,358.08 is: 1,061,843.65
Step by Step Solution
- Step 1: Write the proportion equation
828,931.20 : 1,237,344.96 = 711,358.08 : x - Step 2: Convert to fraction form
828,931.20/1,237,344.96 = 711,358.08/x - Step 3: Cross multiply
828,931.20x = 1,237,344.96 × 711,358.08 - Step 4: Simplify right side
828,931.20x = 880,195,335,043.28 - Step 5: Solve for x
x = 880,195,335,043.28/828,931.20 - Step 6: Final answer
x = 1,061,843.65
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.