Finding the Fourth Proportional to 8,420,191.42, 11,617,211.66 and 5,153,600.74
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Solution
The fourth proportional to 8,420,191.42, 11,617,211.66 and 5,153,600.74 is: 7,110,345.55
Step by Step Solution
- Step 1: Write the proportion equation
8,420,191.42 : 11,617,211.66 = 5,153,600.74 : x - Step 2: Convert to fraction form
8,420,191.42/11,617,211.66 = 5,153,600.74/x - Step 3: Cross multiply
8,420,191.42x = 11,617,211.66 × 5,153,600.74 - Step 4: Simplify right side
8,420,191.42x = 59,870,470,607,712.63 - Step 5: Solve for x
x = 59,870,470,607,712.63/8,420,191.42 - Step 6: Final answer
x = 7,110,345.55
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1.5x scale
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.