Finding the Fourth Proportional to 8,721,927.79, 12,993,386.99 and 8,328,454.29
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Solution
The fourth proportional to 8,721,927.79, 12,993,386.99 and 8,328,454.29 is: 12,407,214.58
Step by Step Solution
- Step 1: Write the proportion equation
8,721,927.79 : 12,993,386.99 = 8,328,454.29 : x - Step 2: Convert to fraction form
8,721,927.79/12,993,386.99 = 8,328,454.29/x - Step 3: Cross multiply
8,721,927.79x = 12,993,386.99 × 8,328,454.29 - Step 4: Simplify right side
8,721,927.79x = 108,214,829,576,853.41 - Step 5: Solve for x
x = 108,214,829,576,853.41/8,721,927.79 - Step 6: Final answer
x = 12,407,214.58
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.