Finding the Fourth Proportional to 1,281,320.69, 1,768,133.75 and 708,315.75
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Solution
The fourth proportional to 1,281,320.69, 1,768,133.75 and 708,315.75 is: 977,426.65
Step by Step Solution
- Step 1: Write the proportion equation
1,281,320.69 : 1,768,133.75 = 708,315.75 : x - Step 2: Convert to fraction form
1,281,320.69/1,768,133.75 = 708,315.75/x - Step 3: Cross multiply
1,281,320.69x = 1,768,133.75 × 708,315.75 - Step 4: Simplify right side
1,281,320.69x = 1,252,396,979,689.98 - Step 5: Solve for x
x = 1,252,396,979,689.98/1,281,320.69 - Step 6: Final answer
x = 977,426.65
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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.