Finding the Fourth Proportional to 1,288,537.20, 1,779,070.98 and 805,319.56
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Solution
The fourth proportional to 1,288,537.20, 1,779,070.98 and 805,319.56 is: 1,111,897.01
Step by Step Solution
- Step 1: Write the proportion equation
1,288,537.20 : 1,779,070.98 = 805,319.56 : x - Step 2: Convert to fraction form
1,288,537.20/1,779,070.98 = 805,319.56/x - Step 3: Cross multiply
1,288,537.20x = 1,779,070.98 × 805,319.56 - Step 4: Simplify right side
1,288,537.20x = 1,432,720,658,822.37 - Step 5: Solve for x
x = 1,432,720,658,822.37/1,288,537.20 - Step 6: Final answer
x = 1,111,897.01
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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.