Finding the Fourth Proportional to 1,312,905.12, 1,969,356.06 and 471,457.68
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Solution
The fourth proportional to 1,312,905.12, 1,969,356.06 and 471,457.68 is: 707,185.94
Step by Step Solution
- Step 1: Write the proportion equation
1,312,905.12 : 1,969,356.06 = 471,457.68 : x - Step 2: Convert to fraction form
1,312,905.12/1,969,356.06 = 471,457.68/x - Step 3: Cross multiply
1,312,905.12x = 1,969,356.06 × 471,457.68 - Step 4: Simplify right side
1,312,905.12x = 928,468,039,141.54 - Step 5: Solve for x
x = 928,468,039,141.54/1,312,905.12 - Step 6: Final answer
x = 707,185.94
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.