Finding the Fourth Proportional to 679,943.68, 938,323.23 and 378,137.68
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Solution
The fourth proportional to 679,943.68, 938,323.23 and 378,137.68 is: 521,830.53
Step by Step Solution
- Step 1: Write the proportion equation
679,943.68 : 938,323.23 = 378,137.68 : x - Step 2: Convert to fraction form
679,943.68/938,323.23 = 378,137.68/x - Step 3: Cross multiply
679,943.68x = 938,323.23 × 378,137.68 - Step 4: Simplify right side
679,943.68x = 354,815,369,282.31 - Step 5: Solve for x
x = 354,815,369,282.31/679,943.68 - Step 6: Final answer
x = 521,830.53
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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.