Finding the Fourth Proportional to 766,619,271.77, 1,057,932,503.99 and 427,528,115.53
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Solution
The fourth proportional to 766,619,271.77, 1,057,932,503.99 and 427,528,115.53 is: 589,987,633.29
Step by Step Solution
- Step 1: Write the proportion equation
766,619,271.77 : 1,057,932,503.99 = 427,528,115.53 : x - Step 2: Convert to fraction form
766,619,271.77/1,057,932,503.99 = 427,528,115.53/x - Step 3: Cross multiply
766,619,271.77x = 1,057,932,503.99 × 427,528,115.53 - Step 4: Simplify right side
766,619,271.77x = 452,295,889,786,641,216 - Step 5: Solve for x
x = 452,295,889,786,641,216/766,619,271.77 - Step 6: Final answer
x = 589,987,633.29
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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.