Finding the Fourth Proportional to 812,464.42, 1,122,368.78 and 648,906.19
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Solution
The fourth proportional to 812,464.42, 1,122,368.78 and 648,906.19 is: 896,423.31
Step by Step Solution
- Step 1: Write the proportion equation
812,464.42 : 1,122,368.78 = 648,906.19 : x - Step 2: Convert to fraction form
812,464.42/1,122,368.78 = 648,906.19/x - Step 3: Cross multiply
812,464.42x = 1,122,368.78 × 648,906.19 - Step 4: Simplify right side
812,464.42x = 728,312,039,948.37 - Step 5: Solve for x
x = 728,312,039,948.37/812,464.42 - Step 6: Final answer
x = 896,423.31
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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.