Finding the Fourth Proportional to 1,330,139,134.99, 1,994,594,566.23 and 489,570,739.70
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Solution
The fourth proportional to 1,330,139,134.99, 1,994,594,566.23 and 489,570,739.70 is: 734,130,070.68
Step by Step Solution
- Step 1: Write the proportion equation
1,330,139,134.99 : 1,994,594,566.23 = 489,570,739.70 : x - Step 2: Convert to fraction form
1,330,139,134.99/1,994,594,566.23 = 489,570,739.70/x - Step 3: Cross multiply
1,330,139,134.99x = 1,994,594,566.23 × 489,570,739.70 - Step 4: Simplify right side
1,330,139,134.99x = 976,495,137,180,848,768 - Step 5: Solve for x
x = 976,495,137,180,848,768/1,330,139,134.99 - Step 6: Final answer
x = 734,130,070.68
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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.