Finding the Fourth Proportional to 518,400.04, 714,917.58 and 355,293.58
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Solution
The fourth proportional to 518,400.04, 714,917.58 and 355,293.58 is: 489,979.95
Step by Step Solution
- Step 1: Write the proportion equation
518,400.04 : 714,917.58 = 355,293.58 : x - Step 2: Convert to fraction form
518,400.04/714,917.58 = 355,293.58/x - Step 3: Cross multiply
518,400.04x = 714,917.58 × 355,293.58 - Step 4: Simplify right side
518,400.04x = 254,005,626,403.14 - Step 5: Solve for x
x = 254,005,626,403.14/518,400.04 - Step 6: Final answer
x = 489,979.95
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1.5x scale
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.