Finding the Fourth Proportional to 9,478,905.99, 13,081,261.14 and 5,558,117.19
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Solution
The fourth proportional to 9,478,905.99, 13,081,261.14 and 5,558,117.19 is: 7,670,419.19
Step by Step Solution
- Step 1: Write the proportion equation
9,478,905.99 : 13,081,261.14 = 5,558,117.19 : x - Step 2: Convert to fraction form
9,478,905.99/13,081,261.14 = 5,558,117.19/x - Step 3: Cross multiply
9,478,905.99x = 13,081,261.14 × 5,558,117.19 - Step 4: Simplify right side
9,478,905.99x = 72,707,182,409,113 - Step 5: Solve for x
x = 72,707,182,409,113/9,478,905.99 - Step 6: Final answer
x = 7,670,419.19
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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.