Finding the Fourth Proportional to 2,551,901,246.70, 3,827,851,870.05 and 915,913,272.30
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Solution
The fourth proportional to 2,551,901,246.70, 3,827,851,870.05 and 915,913,272.30 is: 1,373,869,908.45
Step by Step Solution
- Step 1: Write the proportion equation
2,551,901,246.70 : 3,827,851,870.05 = 915,913,272.30 : x - Step 2: Convert to fraction form
2,551,901,246.70/3,827,851,870.05 = 915,913,272.30/x - Step 3: Cross multiply
2,551,901,246.70x = 3,827,851,870.05 × 915,913,272.30 - Step 4: Simplify right side
2,551,901,246.70x = 3,505,980,332,177,169,920 - Step 5: Solve for x
x = 3,505,980,332,177,169,920/2,551,901,246.70 - Step 6: Final answer
x = 1,373,869,908.45
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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.