Finding the Fourth Proportional to 2,125,772,913.60, 3,188,659,370.40 and 976,915,569.60
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Solution
The fourth proportional to 2,125,772,913.60, 3,188,659,370.40 and 976,915,569.60 is: 1,465,373,354.40
Step by Step Solution
- Step 1: Write the proportion equation
2,125,772,913.60 : 3,188,659,370.40 = 976,915,569.60 : x - Step 2: Convert to fraction form
2,125,772,913.60/3,188,659,370.40 = 976,915,569.60/x - Step 3: Cross multiply
2,125,772,913.60x = 3,188,659,370.40 × 976,915,569.60 - Step 4: Simplify right side
2,125,772,913.60x = 3,115,050,985,094,693,376 - Step 5: Solve for x
x = 3,115,050,985,094,693,376/2,125,772,913.60 - Step 6: Final answer
x = 1,465,373,354.40
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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.