Finding the Fourth Proportional to 631,386.35, 947,314.81 and 378,848.09
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Solution
The fourth proportional to 631,386.35, 947,314.81 and 378,848.09 is: 568,413.31
Step by Step Solution
- Step 1: Write the proportion equation
631,386.35 : 947,314.81 = 378,848.09 : x - Step 2: Convert to fraction form
631,386.35/947,314.81 = 378,848.09/x - Step 3: Cross multiply
631,386.35x = 947,314.81 × 378,848.09 - Step 4: Simplify right side
631,386.35x = 358,888,406,397.21 - Step 5: Solve for x
x = 358,888,406,397.21/631,386.35 - Step 6: Final answer
x = 568,413.31
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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.