Finding the Fourth Proportional to 779,605.63, 1,075,855.76 and 421,909.63
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Solution
The fourth proportional to 779,605.63, 1,075,855.76 and 421,909.63 is: 582,235.28
Step by Step Solution
- Step 1: Write the proportion equation
779,605.63 : 1,075,855.76 = 421,909.63 : x - Step 2: Convert to fraction form
779,605.63/1,075,855.76 = 421,909.63/x - Step 3: Cross multiply
779,605.63x = 1,075,855.76 × 421,909.63 - Step 4: Simplify right side
779,605.63x = 453,913,905,634.97 - Step 5: Solve for x
x = 453,913,905,634.97/779,605.63 - Step 6: Final answer
x = 582,235.28
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1.5x scale
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.