Finding the Fourth Proportional to 1,068,272,405.70, 1,602,408,608.55 and 331,340,885.70
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Solution
The fourth proportional to 1,068,272,405.70, 1,602,408,608.55 and 331,340,885.70 is: 497,011,328.55
Step by Step Solution
- Step 1: Write the proportion equation
1,068,272,405.70 : 1,602,408,608.55 = 331,340,885.70 : x - Step 2: Convert to fraction form
1,068,272,405.70/1,602,408,608.55 = 331,340,885.70/x - Step 3: Cross multiply
1,068,272,405.70x = 1,602,408,608.55 × 331,340,885.70 - Step 4: Simplify right side
1,068,272,405.70x = 530,943,487,610,261,568 - Step 5: Solve for x
x = 530,943,487,610,261,568/1,068,272,405.70 - Step 6: Final answer
x = 497,011,328.55
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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.