Finding the Fourth Proportional to 1,319,128.64, 1,817,909.60 and 1,057,186.41
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Solution
The fourth proportional to 1,319,128.64, 1,817,909.60 and 1,057,186.41 is: 1,456,923.35
Step by Step Solution
- Step 1: Write the proportion equation
1,319,128.64 : 1,817,909.60 = 1,057,186.41 : x - Step 2: Convert to fraction form
1,319,128.64/1,817,909.60 = 1,057,186.41/x - Step 3: Cross multiply
1,319,128.64x = 1,817,909.60 × 1,057,186.41 - Step 4: Simplify right side
1,319,128.64x = 1,921,869,323,728.54 - Step 5: Solve for x
x = 1,921,869,323,728.54/1,319,128.64 - Step 6: Final answer
x = 1,456,923.35
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.