Finding the Fourth Proportional to 746,496,915.80, 1,119,745,373.70 and 687,374,432.60
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Solution
The fourth proportional to 746,496,915.80, 1,119,745,373.70 and 687,374,432.60 is: 1,031,061,648.90
Step by Step Solution
- Step 1: Write the proportion equation
746,496,915.80 : 1,119,745,373.70 = 687,374,432.60 : x - Step 2: Convert to fraction form
746,496,915.80/1,119,745,373.70 = 687,374,432.60/x - Step 3: Cross multiply
746,496,915.80x = 1,119,745,373.70 × 687,374,432.60 - Step 4: Simplify right side
746,496,915.80x = 769,684,340,903,512,576 - Step 5: Solve for x
x = 769,684,340,903,512,576/746,496,915.80 - Step 6: Final answer
x = 1,031,061,648.90
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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.