Finding the Fourth Proportional to 531,779,136.85, 733,977,652.92 and 311,833,421.65
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Solution
The fourth proportional to 531,779,136.85, 733,977,652.92 and 311,833,421.65 is: 430,401,922.65
Step by Step Solution
- Step 1: Write the proportion equation
531,779,136.85 : 733,977,652.92 = 311,833,421.65 : x - Step 2: Convert to fraction form
531,779,136.85/733,977,652.92 = 311,833,421.65/x - Step 3: Cross multiply
531,779,136.85x = 733,977,652.92 × 311,833,421.65 - Step 4: Simplify right side
531,779,136.85x = 228,878,762,921,009,792 - Step 5: Solve for x
x = 228,878,762,921,009,792/531,779,136.85 - Step 6: Final answer
x = 430,401,922.65
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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.