Finding the Fourth Proportional to 778,515.84, 1,074,352.01 and 438,984.09
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Solution
The fourth proportional to 778,515.84, 1,074,352.01 and 438,984.09 is: 605,798.13
Step by Step Solution
- Step 1: Write the proportion equation
778,515.84 : 1,074,352.01 = 438,984.09 : x - Step 2: Convert to fraction form
778,515.84/1,074,352.01 = 438,984.09/x - Step 3: Cross multiply
778,515.84x = 1,074,352.01 × 438,984.09 - Step 4: Simplify right side
778,515.84x = 471,623,437,254.60 - Step 5: Solve for x
x = 471,623,437,254.60/778,515.84 - Step 6: Final answer
x = 605,798.13
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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.