Finding the Fourth Proportional to 7,872,117.79, 10,863,699 and 4,387,813.09
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Solution
The fourth proportional to 7,872,117.79, 10,863,699 and 4,387,813.09 is: 6,055,280.41
Step by Step Solution
- Step 1: Write the proportion equation
7,872,117.79 : 10,863,699 = 4,387,813.09 : x - Step 2: Convert to fraction form
7,872,117.79/10,863,699 = 4,387,813.09/x - Step 3: Cross multiply
7,872,117.79x = 10,863,699 × 4,387,813.09 - Step 4: Simplify right side
7,872,117.79x = 47,667,880,678,019.91 - Step 5: Solve for x
x = 47,667,880,678,019.91/7,872,117.79 - Step 6: Final answer
x = 6,055,280.41
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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.