Finding the Fourth Proportional to 798,528,228.80, 1,197,792,343.20 and 681,626,955.20
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Solution
The fourth proportional to 798,528,228.80, 1,197,792,343.20 and 681,626,955.20 is: 1,022,440,432.80
Step by Step Solution
- Step 1: Write the proportion equation
798,528,228.80 : 1,197,792,343.20 = 681,626,955.20 : x - Step 2: Convert to fraction form
798,528,228.80/1,197,792,343.20 = 681,626,955.20/x - Step 3: Cross multiply
798,528,228.80x = 1,197,792,343.20 × 681,626,955.20 - Step 4: Simplify right side
798,528,228.80x = 816,447,547,857,289,472 - Step 5: Solve for x
x = 816,447,547,857,289,472/798,528,228.80 - Step 6: Final answer
x = 1,022,440,432.80
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Double scale
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Similar ratio
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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.