Finding the Fourth Proportional to 842,681.65, 1,261,398.08 and 486,638.05
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Solution
The fourth proportional to 842,681.65, 1,261,398.08 and 486,638.05 is: 728,441.52
Step by Step Solution
- Step 1: Write the proportion equation
842,681.65 : 1,261,398.08 = 486,638.05 : x - Step 2: Convert to fraction form
842,681.65/1,261,398.08 = 486,638.05/x - Step 3: Cross multiply
842,681.65x = 1,261,398.08 × 486,638.05 - Step 4: Simplify right side
842,681.65x = 613,844,299,491.75 - Step 5: Solve for x
x = 613,844,299,491.75/842,681.65 - Step 6: Final answer
x = 728,441.52
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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.