Finding the Fourth Proportional to 709,129.98, 978,602.58 and 386,839.08
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Solution
The fourth proportional to 709,129.98, 978,602.58 and 386,839.08 is: 533,839.68
Step by Step Solution
- Step 1: Write the proportion equation
709,129.98 : 978,602.58 = 386,839.08 : x - Step 2: Convert to fraction form
709,129.98/978,602.58 = 386,839.08/x - Step 3: Cross multiply
709,129.98x = 978,602.58 × 386,839.08 - Step 4: Simplify right side
709,129.98x = 378,561,721,732.83 - Step 5: Solve for x
x = 378,561,721,732.83/709,129.98 - Step 6: Final answer
x = 533,839.68
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.