Finding the Fourth Proportional to 745,188.84, 1,028,355.48 and 405,656.28
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Solution
The fourth proportional to 745,188.84, 1,028,355.48 and 405,656.28 is: 559,802.88
Step by Step Solution
- Step 1: Write the proportion equation
745,188.84 : 1,028,355.48 = 405,656.28 : x - Step 2: Convert to fraction form
745,188.84/1,028,355.48 = 405,656.28/x - Step 3: Cross multiply
745,188.84x = 1,028,355.48 × 405,656.28 - Step 4: Simplify right side
745,188.84x = 417,158,858,534.41 - Step 5: Solve for x
x = 417,158,858,534.41/745,188.84 - Step 6: Final answer
x = 559,802.88
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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.