Finding the Fourth Proportional to 1,512,433,987.70, 2,268,650,981.55 and 363,576,643.70
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Solution
The fourth proportional to 1,512,433,987.70, 2,268,650,981.55 and 363,576,643.70 is: 545,364,965.55
Step by Step Solution
- Step 1: Write the proportion equation
1,512,433,987.70 : 2,268,650,981.55 = 363,576,643.70 : x - Step 2: Convert to fraction form
1,512,433,987.70/2,268,650,981.55 = 363,576,643.70/x - Step 3: Cross multiply
1,512,433,987.70x = 2,268,650,981.55 × 363,576,643.70 - Step 4: Simplify right side
1,512,433,987.70x = 824,828,509,598,659,712 - Step 5: Solve for x
x = 824,828,509,598,659,712/1,512,433,987.70 - Step 6: Final answer
x = 545,364,965.55
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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.