Finding the Fourth Proportional to 1,578,820, 2,178,823.44 and 863,428
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Solution
The fourth proportional to 1,578,820, 2,178,823.44 and 863,428 is: 1,191,558.99
Step by Step Solution
- Step 1: Write the proportion equation
1,578,820 : 2,178,823.44 = 863,428 : x - Step 2: Convert to fraction form
1,578,820/2,178,823.44 = 863,428/x - Step 3: Cross multiply
1,578,820x = 2,178,823.44 × 863,428 - Step 4: Simplify right side
1,578,820x = 1,881,257,165,152.32 - Step 5: Solve for x
x = 1,881,257,165,152.32/1,578,820 - Step 6: Final answer
x = 1,191,558.99
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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.