Finding the Fourth Proportional to 1,911,903.99, 2,638,984.67 and 1,249,712.06
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Solution
The fourth proportional to 1,911,903.99, 2,638,984.67 and 1,249,712.06 is: 1,724,966.82
Step by Step Solution
- Step 1: Write the proportion equation
1,911,903.99 : 2,638,984.67 = 1,249,712.06 : x - Step 2: Convert to fraction form
1,911,903.99/2,638,984.67 = 1,249,712.06/x - Step 3: Cross multiply
1,911,903.99x = 2,638,984.67 × 1,249,712.06 - Step 4: Simplify right side
1,911,903.99x = 3,297,970,948,810.64 - Step 5: Solve for x
x = 3,297,970,948,810.64/1,911,903.99 - Step 6: Final answer
x = 1,724,966.82
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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.