Finding the Fourth Proportional to 458,688.20, 688,032.30 and 429,163.70
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Solution
The fourth proportional to 458,688.20, 688,032.30 and 429,163.70 is: 643,745.55
Step by Step Solution
- Step 1: Write the proportion equation
458,688.20 : 688,032.30 = 429,163.70 : x - Step 2: Convert to fraction form
458,688.20/688,032.30 = 429,163.70/x - Step 3: Cross multiply
458,688.20x = 688,032.30 × 429,163.70 - Step 4: Simplify right side
458,688.20x = 295,278,487,587.51 - Step 5: Solve for x
x = 295,278,487,587.51/458,688.20 - Step 6: Final answer
x = 643,745.55
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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.