Finding the Fourth Proportional to 636,924.90, 879,349.08 and 438,356.28
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Solution
The fourth proportional to 636,924.90, 879,349.08 and 438,356.28 is: 605,201.95
Step by Step Solution
- Step 1: Write the proportion equation
636,924.90 : 879,349.08 = 438,356.28 : x - Step 2: Convert to fraction form
636,924.90/879,349.08 = 438,356.28/x - Step 3: Cross multiply
636,924.90x = 879,349.08 × 438,356.28 - Step 4: Simplify right side
636,924.90x = 385,468,191,530.22 - Step 5: Solve for x
x = 385,468,191,530.22/636,924.90 - Step 6: Final answer
x = 605,201.95
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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.