Finding the Fourth Proportional to 717,176.14, 989,705.42 and 390,493.02
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Solution
The fourth proportional to 717,176.14, 989,705.42 and 390,493.02 is: 538,881.64
Step by Step Solution
- Step 1: Write the proportion equation
717,176.14 : 989,705.42 = 390,493.02 : x - Step 2: Convert to fraction form
717,176.14/989,705.42 = 390,493.02/x - Step 3: Cross multiply
717,176.14x = 989,705.42 × 390,493.02 - Step 4: Simplify right side
717,176.14x = 386,473,051,465.18 - Step 5: Solve for x
x = 386,473,051,465.18/717,176.14 - Step 6: Final answer
x = 538,881.64
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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.