Finding the Fourth Proportional to 1,543,905.12, 2,130,565.68 and 864,865.92
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Solution
The fourth proportional to 1,543,905.12, 2,130,565.68 and 864,865.92 is: 1,193,501.87
Step by Step Solution
- Step 1: Write the proportion equation
1,543,905.12 : 2,130,565.68 = 864,865.92 : x - Step 2: Convert to fraction form
1,543,905.12/2,130,565.68 = 864,865.92/x - Step 3: Cross multiply
1,543,905.12x = 2,130,565.68 × 864,865.92 - Step 4: Simplify right side
1,543,905.12x = 1,842,653,646,953.63 - Step 5: Solve for x
x = 1,842,653,646,953.63/1,543,905.12 - Step 6: Final answer
x = 1,193,501.87
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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.