Finding the Fourth Proportional to 775,350,966.69, 1,069,987,660.74 and 422,934,637.41
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Solution
The fourth proportional to 775,350,966.69, 1,069,987,660.74 and 422,934,637.41 is: 583,651,614.26
Step by Step Solution
- Step 1: Write the proportion equation
775,350,966.69 : 1,069,987,660.74 = 422,934,637.41 : x - Step 2: Convert to fraction form
775,350,966.69/1,069,987,660.74 = 422,934,637.41/x - Step 3: Cross multiply
775,350,966.69x = 1,069,987,660.74 × 422,934,637.41 - Step 4: Simplify right side
775,350,966.69x = 452,534,843,328,246,016 - Step 5: Solve for x
x = 452,534,843,328,246,016/775,350,966.69 - Step 6: Final answer
x = 583,651,614.26
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Double scale
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.