Finding the Fourth Proportional to 695,993.78, 960,538.84 and 390,122.12
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Solution
The fourth proportional to 695,993.78, 960,538.84 and 390,122.12 is: 538,406.32
Step by Step Solution
- Step 1: Write the proportion equation
695,993.78 : 960,538.84 = 390,122.12 : x - Step 2: Convert to fraction form
695,993.78/960,538.84 = 390,122.12/x - Step 3: Cross multiply
695,993.78x = 960,538.84 × 390,122.12 - Step 4: Simplify right side
695,993.78x = 374,727,448,603.14 - Step 5: Solve for x
x = 374,727,448,603.14/695,993.78 - Step 6: Final answer
x = 538,406.32
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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.