Finding the Fourth Proportional to 519,123.16, 778,686.18 and 145,149.40
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Solution
The fourth proportional to 519,123.16, 778,686.18 and 145,149.40 is: 217,724.50
Step by Step Solution
- Step 1: Write the proportion equation
519,123.16 : 778,686.18 = 145,149.40 : x - Step 2: Convert to fraction form
519,123.16/778,686.18 = 145,149.40/x - Step 3: Cross multiply
519,123.16x = 778,686.18 × 145,149.40 - Step 4: Simplify right side
519,123.16x = 113,025,831,815.29 - Step 5: Solve for x
x = 113,025,831,815.29/519,123.16 - Step 6: Final answer
x = 217,724.50
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1.5x scale
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.