Finding the Fourth Proportional to 787,968,243.20, 1,181,952,364.80 and 777,218,700.80
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Solution
The fourth proportional to 787,968,243.20, 1,181,952,364.80 and 777,218,700.80 is: 1,165,828,051.20
Step by Step Solution
- Step 1: Write the proportion equation
787,968,243.20 : 1,181,952,364.80 = 777,218,700.80 : x - Step 2: Convert to fraction form
787,968,243.20/1,181,952,364.80 = 777,218,700.80/x - Step 3: Cross multiply
787,968,243.20x = 1,181,952,364.80 × 777,218,700.80 - Step 4: Simplify right side
787,968,243.20x = 918,635,481,377,343,616 - Step 5: Solve for x
x = 918,635,481,377,343,616/787,968,243.20 - Step 6: Final answer
x = 1,165,828,051.20
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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.