Finding the Fourth Proportional to 915,898.52, 1,262,479.55 and 721,990.01
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Solution
The fourth proportional to 915,898.52, 1,262,479.55 and 721,990.01 is: 995,194.99
Step by Step Solution
- Step 1: Write the proportion equation
915,898.52 : 1,262,479.55 = 721,990.01 : x - Step 2: Convert to fraction form
915,898.52/1,262,479.55 = 721,990.01/x - Step 3: Cross multiply
915,898.52x = 1,262,479.55 × 721,990.01 - Step 4: Simplify right side
915,898.52x = 911,497,613,006.95 - Step 5: Solve for x
x = 911,497,613,006.95/915,898.52 - Step 6: Final answer
x = 995,194.99
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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.