Finding the Fourth Proportional to 478,616.30, 717,268.35 and 390,042.80
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Solution
The fourth proportional to 478,616.30, 717,268.35 and 390,042.80 is: 584,529.52
Step by Step Solution
- Step 1: Write the proportion equation
478,616.30 : 717,268.35 = 390,042.80 : x - Step 2: Convert to fraction form
478,616.30/717,268.35 = 390,042.80/x - Step 3: Cross multiply
478,616.30x = 717,268.35 × 390,042.80 - Step 4: Simplify right side
478,616.30x = 279,765,355,585.38 - Step 5: Solve for x
x = 279,765,355,585.38/478,616.30 - Step 6: Final answer
x = 584,529.52
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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.