Finding the Fourth Proportional to 12,990,331.05, 19,489,823.99 and 4,355,285.95
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Solution
The fourth proportional to 12,990,331.05, 19,489,823.99 and 4,355,285.95 is: 6,534,379.79
Step by Step Solution
- Step 1: Write the proportion equation
12,990,331.05 : 19,489,823.99 = 4,355,285.95 : x - Step 2: Convert to fraction form
12,990,331.05/19,489,823.99 = 4,355,285.95/x - Step 3: Cross multiply
12,990,331.05x = 19,489,823.99 × 4,355,285.95 - Step 4: Simplify right side
12,990,331.05x = 84,883,756,602,508.16 - Step 5: Solve for x
x = 84,883,756,602,508.16/12,990,331.05 - Step 6: Final answer
x = 6,534,379.79
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.