Finding the Fourth Proportional to 489,764.21, 732,745.46 and 429,338.05
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Solution
The fourth proportional to 489,764.21, 732,745.46 and 429,338.05 is: 642,340.75
Step by Step Solution
- Step 1: Write the proportion equation
489,764.21 : 732,745.46 = 429,338.05 : x - Step 2: Convert to fraction form
489,764.21/732,745.46 = 429,338.05/x - Step 3: Cross multiply
489,764.21x = 732,745.46 × 429,338.05 - Step 4: Simplify right side
489,764.21x = 314,595,506,184.24 - Step 5: Solve for x
x = 314,595,506,184.24/489,764.21 - Step 6: Final answer
x = 642,340.75
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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.