Finding the Fourth Proportional to 7,972,936,934.40, 11,959,405,401.60 and 6,113,318,587.20
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Solution
The fourth proportional to 7,972,936,934.40, 11,959,405,401.60 and 6,113,318,587.20 is: 9,169,977,880.80
Step by Step Solution
- Step 1: Write the proportion equation
7,972,936,934.40 : 11,959,405,401.60 = 6,113,318,587.20 : x - Step 2: Convert to fraction form
7,972,936,934.40/11,959,405,401.60 = 6,113,318,587.20/x - Step 3: Cross multiply
7,972,936,934.40x = 11,959,405,401.60 × 6,113,318,587.20 - Step 4: Simplify right side
7,972,936,934.40x = 73,111,655,333,461,360,640 - Step 5: Solve for x
x = 73,111,655,333,461,360,640/7,972,936,934.40 - Step 6: Final answer
x = 9,169,977,880.80
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1.5x scale
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.