Finding the Fourth Proportional to 315,523,819.68, 475,439,412 and 259,276,104.24
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Solution
The fourth proportional to 315,523,819.68, 475,439,412 and 259,276,104.24 is: 390,683,906.75
Step by Step Solution
- Step 1: Write the proportion equation
315,523,819.68 : 475,439,412 = 259,276,104.24 : x - Step 2: Convert to fraction form
315,523,819.68/475,439,412 = 259,276,104.24/x - Step 3: Cross multiply
315,523,819.68x = 475,439,412 × 259,276,104.24 - Step 4: Simplify right side
315,523,819.68x = 123,270,078,545,516,304 - Step 5: Solve for x
x = 123,270,078,545,516,304/315,523,819.68 - Step 6: Final answer
x = 390,683,906.75
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.