Finding the Fourth Proportional to 708,828.12, 978,206.42 and 386,555.80
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Solution
The fourth proportional to 708,828.12, 978,206.42 and 386,555.80 is: 533,459.88
Step by Step Solution
- Step 1: Write the proportion equation
708,828.12 : 978,206.42 = 386,555.80 : x - Step 2: Convert to fraction form
708,828.12/978,206.42 = 386,555.80/x - Step 3: Cross multiply
708,828.12x = 978,206.42 × 386,555.80 - Step 4: Simplify right side
708,828.12x = 378,131,365,248.24 - Step 5: Solve for x
x = 378,131,365,248.24/708,828.12 - Step 6: Final answer
x = 533,459.88
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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.