Finding the Fourth Proportional to 725,640,391.28, 1,088,056,779.18 and 430,655,381.84
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Solution
The fourth proportional to 725,640,391.28, 1,088,056,779.18 and 430,655,381.84 is: 645,743,419.65
Step by Step Solution
- Step 1: Write the proportion equation
725,640,391.28 : 1,088,056,779.18 = 430,655,381.84 : x - Step 2: Convert to fraction form
725,640,391.28/1,088,056,779.18 = 430,655,381.84/x - Step 3: Cross multiply
725,640,391.28x = 1,088,056,779.18 × 430,655,381.84 - Step 4: Simplify right side
725,640,391.28x = 468,577,507,701,363,456 - Step 5: Solve for x
x = 468,577,507,701,363,456/725,640,391.28 - Step 6: Final answer
x = 645,743,419.65
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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.