Finding the Fourth Proportional to 564,305.68, 778,739.70 and 309,661.12
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Solution
The fourth proportional to 564,305.68, 778,739.70 and 309,661.12 is: 427,331.17
Step by Step Solution
- Step 1: Write the proportion equation
564,305.68 : 778,739.70 = 309,661.12 : x - Step 2: Convert to fraction form
564,305.68/778,739.70 = 309,661.12/x - Step 3: Cross multiply
564,305.68x = 778,739.70 × 309,661.12 - Step 4: Simplify right side
564,305.68x = 241,145,407,690.46 - Step 5: Solve for x
x = 241,145,407,690.46/564,305.68 - Step 6: Final answer
x = 427,331.17
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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.