Finding the Fourth Proportional to 631,911.60, 872,038.08 and 345,432.96
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Solution
The fourth proportional to 631,911.60, 872,038.08 and 345,432.96 is: 476,697.52
Step by Step Solution
- Step 1: Write the proportion equation
631,911.60 : 872,038.08 = 345,432.96 : x - Step 2: Convert to fraction form
631,911.60/872,038.08 = 345,432.96/x - Step 3: Cross multiply
631,911.60x = 872,038.08 × 345,432.96 - Step 4: Simplify right side
631,911.60x = 301,230,695,207.12 - Step 5: Solve for x
x = 301,230,695,207.12/631,911.60 - Step 6: Final answer
x = 476,697.52
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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.