Finding the Fourth Proportional to 531,779,135.60, 733,977,651.20 and 311,833,420.40
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Solution
The fourth proportional to 531,779,135.60, 733,977,651.20 and 311,833,420.40 is: 430,401,920.92
Step by Step Solution
- Step 1: Write the proportion equation
531,779,135.60 : 733,977,651.20 = 311,833,420.40 : x - Step 2: Convert to fraction form
531,779,135.60/733,977,651.20 = 311,833,420.40/x - Step 3: Cross multiply
531,779,135.60x = 733,977,651.20 × 311,833,420.40 - Step 4: Simplify right side
531,779,135.60x = 228,878,761,465,625,120 - Step 5: Solve for x
x = 228,878,761,465,625,120/531,779,135.60 - Step 6: Final answer
x = 430,401,920.92
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.