Finding the Fourth Proportional to 778,347.80, 1,074,118.20 and 438,813.62
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Solution
The fourth proportional to 778,347.80, 1,074,118.20 and 438,813.62 is: 605,561.80
Step by Step Solution
- Step 1: Write the proportion equation
778,347.80 : 1,074,118.20 = 438,813.62 : x - Step 2: Convert to fraction form
778,347.80/1,074,118.20 = 438,813.62/x - Step 3: Cross multiply
778,347.80x = 1,074,118.20 × 438,813.62 - Step 4: Simplify right side
778,347.80x = 471,337,695,649.88 - Step 5: Solve for x
x = 471,337,695,649.88/778,347.80 - Step 6: Final answer
x = 605,561.80
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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.