Finding the Fourth Proportional to 1,630,115,430.40, 2,445,173,145.60 and 813,822,054.40
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Solution
The fourth proportional to 1,630,115,430.40, 2,445,173,145.60 and 813,822,054.40 is: 1,220,733,081.60
Step by Step Solution
- Step 1: Write the proportion equation
1,630,115,430.40 : 2,445,173,145.60 = 813,822,054.40 : x - Step 2: Convert to fraction form
1,630,115,430.40/2,445,173,145.60 = 813,822,054.40/x - Step 3: Cross multiply
1,630,115,430.40x = 2,445,173,145.60 × 813,822,054.40 - Step 4: Simplify right side
1,630,115,430.40x = 1,989,935,832,715,902,208 - Step 5: Solve for x
x = 1,989,935,832,715,902,208/1,630,115,430.40 - Step 6: Final answer
x = 1,220,733,081.60
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Double scale
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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.