Finding the Fourth Proportional to 1,216,315.24, 1,678,781.50 and 707,311.24
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Solution
The fourth proportional to 1,216,315.24, 1,678,781.50 and 707,311.24 is: 976,244.47
Step by Step Solution
- Step 1: Write the proportion equation
1,216,315.24 : 1,678,781.50 = 707,311.24 : x - Step 2: Convert to fraction form
1,216,315.24/1,678,781.50 = 707,311.24/x - Step 3: Cross multiply
1,216,315.24x = 1,678,781.50 × 707,311.24 - Step 4: Simplify right side
1,216,315.24x = 1,187,421,024,454.06 - Step 5: Solve for x
x = 1,187,421,024,454.06/1,216,315.24 - Step 6: Final answer
x = 976,244.47
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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.