Finding the Fourth Proportional to 578,727.05, 869,420.99 and 408,340.91
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Solution
The fourth proportional to 578,727.05, 869,420.99 and 408,340.91 is: 613,450.10
Step by Step Solution
- Step 1: Write the proportion equation
578,727.05 : 869,420.99 = 408,340.91 : x - Step 2: Convert to fraction form
578,727.05/869,420.99 = 408,340.91/x - Step 3: Cross multiply
578,727.05x = 869,420.99 × 408,340.91 - Step 4: Simplify right side
578,727.05x = 355,020,161,424.11 - Step 5: Solve for x
x = 355,020,161,424.11/578,727.05 - Step 6: Final answer
x = 613,450.10
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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.