Finding the Fourth Proportional to 710,644.98, 980,692.62 and 388,355.12
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Solution
The fourth proportional to 710,644.98, 980,692.62 and 388,355.12 is: 535,931.46
Step by Step Solution
- Step 1: Write the proportion equation
710,644.98 : 980,692.62 = 388,355.12 : x - Step 2: Convert to fraction form
710,644.98/980,692.62 = 388,355.12/x - Step 3: Cross multiply
710,644.98x = 980,692.62 × 388,355.12 - Step 4: Simplify right side
710,644.98x = 380,857,000,123.21 - Step 5: Solve for x
x = 380,857,000,123.21/710,644.98 - Step 6: Final answer
x = 535,931.46
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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.