Finding the Fourth Proportional to 5,118,103,632.90, 7,677,155,449.35 and 4,245,690,087.30
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Solution
The fourth proportional to 5,118,103,632.90, 7,677,155,449.35 and 4,245,690,087.30 is: 6,368,535,130.95
Step by Step Solution
- Step 1: Write the proportion equation
5,118,103,632.90 : 7,677,155,449.35 = 4,245,690,087.30 : x - Step 2: Convert to fraction form
5,118,103,632.90/7,677,155,449.35 = 4,245,690,087.30/x - Step 3: Cross multiply
5,118,103,632.90x = 7,677,155,449.35 × 4,245,690,087.30 - Step 4: Simplify right side
5,118,103,632.90x = 32,594,822,789,966,475,264 - Step 5: Solve for x
x = 32,594,822,789,966,475,264/5,118,103,632.90 - Step 6: Final answer
x = 6,368,535,130.95
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Double scale
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Similar ratio
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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.