Finding the Fourth Proportional to 521,605,664.10, 782,408,496.15 and 513,952,913.70
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Solution
The fourth proportional to 521,605,664.10, 782,408,496.15 and 513,952,913.70 is: 770,929,370.55
Step by Step Solution
- Step 1: Write the proportion equation
521,605,664.10 : 782,408,496.15 = 513,952,913.70 : x - Step 2: Convert to fraction form
521,605,664.10/782,408,496.15 = 513,952,913.70/x - Step 3: Cross multiply
521,605,664.10x = 782,408,496.15 × 513,952,913.70 - Step 4: Simplify right side
521,605,664.10x = 402,121,126,299,927,680 - Step 5: Solve for x
x = 402,121,126,299,927,680/521,605,664.10 - Step 6: Final answer
x = 770,929,370.55
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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.