Finding the Fourth Proportional to 2,109,638.39, 2,911,240.98 and 1,238,459.09
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Solution
The fourth proportional to 2,109,638.39, 2,911,240.98 and 1,238,459.09 is: 1,709,038.32
Step by Step Solution
- Step 1: Write the proportion equation
2,109,638.39 : 2,911,240.98 = 1,238,459.09 : x - Step 2: Convert to fraction form
2,109,638.39/2,911,240.98 = 1,238,459.09/x - Step 3: Cross multiply
2,109,638.39x = 2,911,240.98 × 1,238,459.09 - Step 4: Simplify right side
2,109,638.39x = 3,605,452,840,305.30 - Step 5: Solve for x
x = 3,605,452,840,305.30/2,109,638.39 - Step 6: Final answer
x = 1,709,038.32
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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.