Finding the Fourth Proportional to 639,435.84, 882,486.19 and 549,090.87
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Solution
The fourth proportional to 639,435.84, 882,486.19 and 549,090.87 is: 757,800.99
Step by Step Solution
- Step 1: Write the proportion equation
639,435.84 : 882,486.19 = 549,090.87 : x - Step 2: Convert to fraction form
639,435.84/882,486.19 = 549,090.87/x - Step 3: Cross multiply
639,435.84x = 882,486.19 × 549,090.87 - Step 4: Simplify right side
639,435.84x = 484,565,109,830.09 - Step 5: Solve for x
x = 484,565,109,830.09/639,435.84 - Step 6: Final answer
x = 757,800.99
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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.