Finding the Fourth Proportional to 772,115.15, 1,065,582.68 and 428,058.99
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Solution
The fourth proportional to 772,115.15, 1,065,582.68 and 428,058.99 is: 590,756.76
Step by Step Solution
- Step 1: Write the proportion equation
772,115.15 : 1,065,582.68 = 428,058.99 : x - Step 2: Convert to fraction form
772,115.15/1,065,582.68 = 428,058.99/x - Step 3: Cross multiply
772,115.15x = 1,065,582.68 × 428,058.99 - Step 4: Simplify right side
772,115.15x = 456,132,238,294.09 - Step 5: Solve for x
x = 456,132,238,294.09/772,115.15 - Step 6: Final answer
x = 590,756.76
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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.