Finding the Fourth Proportional to 10,602,203.70, 15,903,305.55 and 7,242,971.70
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Solution
The fourth proportional to 10,602,203.70, 15,903,305.55 and 7,242,971.70 is: 10,864,457.55
Step by Step Solution
- Step 1: Write the proportion equation
10,602,203.70 : 15,903,305.55 = 7,242,971.70 : x - Step 2: Convert to fraction form
10,602,203.70/15,903,305.55 = 7,242,971.70/x - Step 3: Cross multiply
10,602,203.70x = 15,903,305.55 × 7,242,971.70 - Step 4: Simplify right side
10,602,203.70x = 115,187,192,035,102.94 - Step 5: Solve for x
x = 115,187,192,035,102.94/10,602,203.70 - Step 6: Final answer
x = 10,864,457.55
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Double scale
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Similar ratio
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.