Finding the Fourth Proportional to 521,605,497.60, 782,408,246.40 and 513,952,747.20
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Solution
The fourth proportional to 521,605,497.60, 782,408,246.40 and 513,952,747.20 is: 770,929,120.80
Step by Step Solution
- Step 1: Write the proportion equation
521,605,497.60 : 782,408,246.40 = 513,952,747.20 : x - Step 2: Convert to fraction form
521,605,497.60/782,408,246.40 = 513,952,747.20/x - Step 3: Cross multiply
521,605,497.60x = 782,408,246.40 × 513,952,747.20 - Step 4: Simplify right side
521,605,497.60x = 402,120,867,669,214,464 - Step 5: Solve for x
x = 402,120,867,669,214,464/521,605,497.60 - Step 6: Final answer
x = 770,929,120.80
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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.