Finding the Fourth Proportional to 778,373.76, 1,074,114.09 and 438,820.14
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Solution
The fourth proportional to 778,373.76, 1,074,114.09 and 438,820.14 is: 605,548.28
Step by Step Solution
- Step 1: Write the proportion equation
778,373.76 : 1,074,114.09 = 438,820.14 : x - Step 2: Convert to fraction form
778,373.76/1,074,114.09 = 438,820.14/x - Step 3: Cross multiply
778,373.76x = 1,074,114.09 × 438,820.14 - Step 4: Simplify right side
778,373.76x = 471,342,895,349.77 - Step 5: Solve for x
x = 471,342,895,349.77/778,373.76 - Step 6: Final answer
x = 605,548.28
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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.