Finding the Fourth Proportional to 721,746.26, 996,011.97 and 399,478.74
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Solution
The fourth proportional to 721,746.26, 996,011.97 and 399,478.74 is: 551,281.84
Step by Step Solution
- Step 1: Write the proportion equation
721,746.26 : 996,011.97 = 399,478.74 : x - Step 2: Convert to fraction form
721,746.26/996,011.97 = 399,478.74/x - Step 3: Cross multiply
721,746.26x = 996,011.97 × 399,478.74 - Step 4: Simplify right side
721,746.26x = 397,885,606,800.52 - Step 5: Solve for x
x = 397,885,606,800.52/721,746.26 - Step 6: Final answer
x = 551,281.84
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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.