Finding the Fourth Proportional to 689,871,532.05, 952,026,581.12 and 392,513,767.02
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Solution
The fourth proportional to 689,871,532.05, 952,026,581.12 and 392,513,767.02 is: 541,671,198.62
Step by Step Solution
- Step 1: Write the proportion equation
689,871,532.05 : 952,026,581.12 = 392,513,767.02 : x - Step 2: Convert to fraction form
689,871,532.05/952,026,581.12 = 392,513,767.02/x - Step 3: Cross multiply
689,871,532.05x = 952,026,581.12 × 392,513,767.02 - Step 4: Simplify right side
689,871,532.05x = 373,683,539,656,620,224 - Step 5: Solve for x
x = 373,683,539,656,620,224/689,871,532.05 - Step 6: Final answer
x = 541,671,198.62
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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.