Finding the Fourth Proportional to 778,516.84, 1,074,353.39 and 438,985.09
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Solution
The fourth proportional to 778,516.84, 1,074,353.39 and 438,985.09 is: 605,799.51
Step by Step Solution
- Step 1: Write the proportion equation
778,516.84 : 1,074,353.39 = 438,985.09 : x - Step 2: Convert to fraction form
778,516.84/1,074,353.39 = 438,985.09/x - Step 3: Cross multiply
778,516.84x = 1,074,353.39 × 438,985.09 - Step 4: Simplify right side
778,516.84x = 471,625,119,600.96 - Step 5: Solve for x
x = 471,625,119,600.96/778,516.84 - Step 6: Final answer
x = 605,799.51
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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.