Finding the Fourth Proportional to 1,440,588.48, 1,985,641.20 and 1,021,624.08
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Solution
The fourth proportional to 1,440,588.48, 1,985,641.20 and 1,021,624.08 is: 1,408,159.85
Step by Step Solution
- Step 1: Write the proportion equation
1,440,588.48 : 1,985,641.20 = 1,021,624.08 : x - Step 2: Convert to fraction form
1,440,588.48/1,985,641.20 = 1,021,624.08/x - Step 3: Cross multiply
1,440,588.48x = 1,985,641.20 × 1,021,624.08 - Step 4: Simplify right side
1,440,588.48x = 2,028,578,864,160.10 - Step 5: Solve for x
x = 2,028,578,864,160.10/1,440,588.48 - Step 6: Final answer
x = 1,408,159.85
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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.