Finding the Fourth Proportional to 725,640,390.53, 1,088,056,778.06 and 430,655,381.09
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Solution
The fourth proportional to 725,640,390.53, 1,088,056,778.06 and 430,655,381.09 is: 645,743,418.53
Step by Step Solution
- Step 1: Write the proportion equation
725,640,390.53 : 1,088,056,778.06 = 430,655,381.09 : x - Step 2: Convert to fraction form
725,640,390.53/1,088,056,778.06 = 430,655,381.09/x - Step 3: Cross multiply
725,640,390.53x = 1,088,056,778.06 × 430,655,381.09 - Step 4: Simplify right side
725,640,390.53x = 468,577,506,398,623,168 - Step 5: Solve for x
x = 468,577,506,398,623,168/725,640,390.53 - Step 6: Final answer
x = 645,743,418.53
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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.