Finding the Fourth Proportional to 2,647,299,206.40, 3,970,948,809.60 and 708,602,438.40
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Solution
The fourth proportional to 2,647,299,206.40, 3,970,948,809.60 and 708,602,438.40 is: 1,062,903,657.60
Step by Step Solution
- Step 1: Write the proportion equation
2,647,299,206.40 : 3,970,948,809.60 = 708,602,438.40 : x - Step 2: Convert to fraction form
2,647,299,206.40/3,970,948,809.60 = 708,602,438.40/x - Step 3: Cross multiply
2,647,299,206.40x = 3,970,948,809.60 × 708,602,438.40 - Step 4: Simplify right side
2,647,299,206.40x = 2,813,824,009,244,136,960 - Step 5: Solve for x
x = 2,813,824,009,244,136,960/2,647,299,206.40 - Step 6: Final answer
x = 1,062,903,657.60
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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.