Finding the Fourth Proportional to 1,392,875.79, 1,922,248.63 and 781,224.74
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Solution
The fourth proportional to 1,392,875.79, 1,922,248.63 and 781,224.74 is: 1,078,135.03
Step by Step Solution
- Step 1: Write the proportion equation
1,392,875.79 : 1,922,248.63 = 781,224.74 : x - Step 2: Convert to fraction form
1,392,875.79/1,922,248.63 = 781,224.74/x - Step 3: Cross multiply
1,392,875.79x = 1,922,248.63 × 781,224.74 - Step 4: Simplify right side
1,392,875.79x = 1,501,708,186,187.11 - Step 5: Solve for x
x = 1,501,708,186,187.11/1,392,875.79 - Step 6: Final answer
x = 1,078,135.03
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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.