Finding the Fourth Proportional to 918,707.44, 1,267,783.08 and 505,240.65
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Solution
The fourth proportional to 918,707.44, 1,267,783.08 and 505,240.65 is: 697,213.85
Step by Step Solution
- Step 1: Write the proportion equation
918,707.44 : 1,267,783.08 = 505,240.65 : x - Step 2: Convert to fraction form
918,707.44/1,267,783.08 = 505,240.65/x - Step 3: Cross multiply
918,707.44x = 1,267,783.08 × 505,240.65 - Step 4: Simplify right side
918,707.44x = 640,535,547,398.20 - Step 5: Solve for x
x = 640,535,547,398.20/918,707.44 - Step 6: Final answer
x = 697,213.85
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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.