Finding the Fourth Proportional to 1,330,139,135.99, 1,994,594,567.73 and 489,570,740.70
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Solution
The fourth proportional to 1,330,139,135.99, 1,994,594,567.73 and 489,570,740.70 is: 734,130,072.18
Step by Step Solution
- Step 1: Write the proportion equation
1,330,139,135.99 : 1,994,594,567.73 = 489,570,740.70 : x - Step 2: Convert to fraction form
1,330,139,135.99/1,994,594,567.73 = 489,570,740.70/x - Step 3: Cross multiply
1,330,139,135.99x = 1,994,594,567.73 × 489,570,740.70 - Step 4: Simplify right side
1,330,139,135.99x = 976,495,139,919,772,416 - Step 5: Solve for x
x = 976,495,139,919,772,416/1,330,139,135.99 - Step 6: Final answer
x = 734,130,072.18
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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.