Finding the Fourth Proportional to 7,808,714.57, 11,712,726.78 and 2,128,939.49
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Solution
The fourth proportional to 7,808,714.57, 11,712,726.78 and 2,128,939.49 is: 3,193,315.15
Step by Step Solution
- Step 1: Write the proportion equation
7,808,714.57 : 11,712,726.78 = 2,128,939.49 : x - Step 2: Convert to fraction form
7,808,714.57/11,712,726.78 = 2,128,939.49/x - Step 3: Cross multiply
7,808,714.57x = 11,712,726.78 × 2,128,939.49 - Step 4: Simplify right side
7,808,714.57x = 24,935,686,518,958.91 - Step 5: Solve for x
x = 24,935,686,518,958.91/7,808,714.57 - Step 6: Final answer
x = 3,193,315.15
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.