Finding the Fourth Proportional to 878,701,454.37, 1,212,527,858.81 and 521,407,661.29
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Solution
The fourth proportional to 878,701,454.37, 1,212,527,858.81 and 521,407,661.29 is: 719,495,013.88
Step by Step Solution
- Step 1: Write the proportion equation
878,701,454.37 : 1,212,527,858.81 = 521,407,661.29 : x - Step 2: Convert to fraction form
878,701,454.37/1,212,527,858.81 = 521,407,661.29/x - Step 3: Cross multiply
878,701,454.37x = 1,212,527,858.81 × 521,407,661.29 - Step 4: Simplify right side
878,701,454.37x = 632,221,315,105,455,104 - Step 5: Solve for x
x = 632,221,315,105,455,104/878,701,454.37 - Step 6: Final answer
x = 719,495,013.88
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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.