Finding the Fourth Proportional to 458,445.70, 686,356.35 and 405,957.70
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Solution
The fourth proportional to 458,445.70, 686,356.35 and 405,957.70 is: 607,774.59
Step by Step Solution
- Step 1: Write the proportion equation
458,445.70 : 686,356.35 = 405,957.70 : x - Step 2: Convert to fraction form
458,445.70/686,356.35 = 405,957.70/x - Step 3: Cross multiply
458,445.70x = 686,356.35 × 405,957.70 - Step 4: Simplify right side
458,445.70x = 278,631,645,226.40 - Step 5: Solve for x
x = 278,631,645,226.40/458,445.70 - Step 6: Final answer
x = 607,774.59
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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.