Finding the Fourth Proportional to 1,230,217.74, 1,697,661.99 and 721,259.10
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Solution
The fourth proportional to 1,230,217.74, 1,697,661.99 and 721,259.10 is: 995,314.99
Step by Step Solution
- Step 1: Write the proportion equation
1,230,217.74 : 1,697,661.99 = 721,259.10 : x - Step 2: Convert to fraction form
1,230,217.74/1,697,661.99 = 721,259.10/x - Step 3: Cross multiply
1,230,217.74x = 1,697,661.99 × 721,259.10 - Step 4: Simplify right side
1,230,217.74x = 1,224,454,159,011.61 - Step 5: Solve for x
x = 1,224,454,159,011.61/1,230,217.74 - Step 6: Final answer
x = 995,314.99
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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.