Finding the Fourth Proportional to 1,392,663.13, 2,088,994.71 and 919,237.76
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Solution
The fourth proportional to 1,392,663.13, 2,088,994.71 and 919,237.76 is: 1,378,856.65
Step by Step Solution
- Step 1: Write the proportion equation
1,392,663.13 : 2,088,994.71 = 919,237.76 : x - Step 2: Convert to fraction form
1,392,663.13/2,088,994.71 = 919,237.76/x - Step 3: Cross multiply
1,392,663.13x = 2,088,994.71 × 919,237.76 - Step 4: Simplify right side
1,392,663.13x = 1,920,282,817,872.25 - Step 5: Solve for x
x = 1,920,282,817,872.25/1,392,663.13 - Step 6: Final answer
x = 1,378,856.65
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.