Finding the Fourth Proportional to 1,007,934,527.62, 1,390,878,620.98 and 561,878,160.18
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Solution
The fourth proportional to 1,007,934,527.62, 1,390,878,620.98 and 561,878,160.18 is: 775,352,266.62
Step by Step Solution
- Step 1: Write the proportion equation
1,007,934,527.62 : 1,390,878,620.98 = 561,878,160.18 : x - Step 2: Convert to fraction form
1,007,934,527.62/1,390,878,620.98 = 561,878,160.18/x - Step 3: Cross multiply
1,007,934,527.62x = 1,390,878,620.98 × 561,878,160.18 - Step 4: Simplify right side
1,007,934,527.62x = 781,504,320,589,937,920 - Step 5: Solve for x
x = 781,504,320,589,937,920/1,007,934,527.62 - Step 6: Final answer
x = 775,352,266.62
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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.