Finding the Fourth Proportional to 715,521.24, 986,379.12 and 499,992.12
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Solution
The fourth proportional to 715,521.24, 986,379.12 and 499,992.12 is: 689,262.26
Step by Step Solution
- Step 1: Write the proportion equation
715,521.24 : 986,379.12 = 499,992.12 : x - Step 2: Convert to fraction form
715,521.24/986,379.12 = 499,992.12/x - Step 3: Cross multiply
715,521.24x = 986,379.12 × 499,992.12 - Step 4: Simplify right side
715,521.24x = 493,181,787,332.53 - Step 5: Solve for x
x = 493,181,787,332.53/715,521.24 - Step 6: Final answer
x = 689,262.26
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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.