Finding the Fourth Proportional to 939,302,403.20, 1,408,953,604.80 and 885,733,150.40
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Solution
The fourth proportional to 939,302,403.20, 1,408,953,604.80 and 885,733,150.40 is: 1,328,599,725.60
Step by Step Solution
- Step 1: Write the proportion equation
939,302,403.20 : 1,408,953,604.80 = 885,733,150.40 : x - Step 2: Convert to fraction form
939,302,403.20/1,408,953,604.80 = 885,733,150.40/x - Step 3: Cross multiply
939,302,403.20x = 1,408,953,604.80 × 885,733,150.40 - Step 4: Simplify right side
939,302,403.20x = 1,247,956,915,146,940,416 - Step 5: Solve for x
x = 1,247,956,915,146,940,416/939,302,403.20 - Step 6: Final answer
x = 1,328,599,725.60
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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.