Finding the Fourth Proportional to 552,486.69, 761,779.49 and 378,140.99
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Solution
The fourth proportional to 552,486.69, 761,779.49 and 378,140.99 is: 521,388.21
Step by Step Solution
- Step 1: Write the proportion equation
552,486.69 : 761,779.49 = 378,140.99 : x - Step 2: Convert to fraction form
552,486.69/761,779.49 = 378,140.99/x - Step 3: Cross multiply
552,486.69x = 761,779.49 × 378,140.99 - Step 4: Simplify right side
552,486.69x = 288,060,044,810.69 - Step 5: Solve for x
x = 288,060,044,810.69/552,486.69 - Step 6: Final answer
x = 521,388.21
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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.