Finding the Fourth Proportional to 636,978.68, 879,059.48 and 395,339.08
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Solution
The fourth proportional to 636,978.68, 879,059.48 and 395,339.08 is: 545,585.87
Step by Step Solution
- Step 1: Write the proportion equation
636,978.68 : 879,059.48 = 395,339.08 : x - Step 2: Convert to fraction form
636,978.68/879,059.48 = 395,339.08/x - Step 3: Cross multiply
636,978.68x = 879,059.48 × 395,339.08 - Step 4: Simplify right side
636,978.68x = 347,526,566,088.48 - Step 5: Solve for x
x = 347,526,566,088.48/636,978.68 - Step 6: Final answer
x = 545,585.87
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.