Finding the Fourth Proportional to 778,543.84, 1,074,390.69 and 439,012.18
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Solution
The fourth proportional to 778,543.84, 1,074,390.69 and 439,012.18 is: 605,836.92
Step by Step Solution
- Step 1: Write the proportion equation
778,543.84 : 1,074,390.69 = 439,012.18 : x - Step 2: Convert to fraction form
778,543.84/1,074,390.69 = 439,012.18/x - Step 3: Cross multiply
778,543.84x = 1,074,390.69 × 439,012.18 - Step 4: Simplify right side
778,543.84x = 471,670,598,988.60 - Step 5: Solve for x
x = 471,670,598,988.60/778,543.84 - Step 6: Final answer
x = 605,836.92
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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.