Finding the Fourth Proportional to 2,129,328.12, 2,938,296.36 and 1,211,313
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Solution
The fourth proportional to 2,129,328.12, 2,938,296.36 and 1,211,313 is: 1,671,511.57
Step by Step Solution
- Step 1: Write the proportion equation
2,129,328.12 : 2,938,296.36 = 1,211,313 : x - Step 2: Convert to fraction form
2,129,328.12/2,938,296.36 = 1,211,313/x - Step 3: Cross multiply
2,129,328.12x = 2,938,296.36 × 1,211,313 - Step 4: Simplify right side
2,129,328.12x = 3,559,196,578,720.68 - Step 5: Solve for x
x = 3,559,196,578,720.68/2,129,328.12 - Step 6: Final answer
x = 1,671,511.57
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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.