Finding the Fourth Proportional to 326,430,386.40, 489,645,579.60 and 307,723,663.20
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Solution
The fourth proportional to 326,430,386.40, 489,645,579.60 and 307,723,663.20 is: 461,585,494.80
Step by Step Solution
- Step 1: Write the proportion equation
326,430,386.40 : 489,645,579.60 = 307,723,663.20 : x - Step 2: Convert to fraction form
326,430,386.40/489,645,579.60 = 307,723,663.20/x - Step 3: Cross multiply
326,430,386.40x = 489,645,579.60 × 307,723,663.20 - Step 4: Simplify right side
326,430,386.40x = 150,675,531,424,199,200 - Step 5: Solve for x
x = 150,675,531,424,199,200/326,430,386.40 - Step 6: Final answer
x = 461,585,494.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.