Finding the Fourth Proportional to 900,726.20, 1,242,992.94 and 498,321.08
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Solution
The fourth proportional to 900,726.20, 1,242,992.94 and 498,321.08 is: 687,677.99
Step by Step Solution
- Step 1: Write the proportion equation
900,726.20 : 1,242,992.94 = 498,321.08 : x - Step 2: Convert to fraction form
900,726.20/1,242,992.94 = 498,321.08/x - Step 3: Cross multiply
900,726.20x = 1,242,992.94 × 498,321.08 - Step 4: Simplify right side
900,726.20x = 619,409,584,293.18 - Step 5: Solve for x
x = 619,409,584,293.18/900,726.20 - Step 6: Final answer
x = 687,677.99
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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.