Finding the Fourth Proportional to 1,545,324,386.34, 2,133,102,356.17 and 918,791,319.61
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Solution
The fourth proportional to 1,545,324,386.34, 2,133,102,356.17 and 918,791,319.61 is: 1,268,261,826.45
Step by Step Solution
- Step 1: Write the proportion equation
1,545,324,386.34 : 2,133,102,356.17 = 918,791,319.61 : x - Step 2: Convert to fraction form
1,545,324,386.34/2,133,102,356.17 = 918,791,319.61/x - Step 3: Cross multiply
1,545,324,386.34x = 2,133,102,356.17 × 918,791,319.61 - Step 4: Simplify right side
1,545,324,386.34x = 1,959,875,928,677,969,152 - Step 5: Solve for x
x = 1,959,875,928,677,969,152/1,545,324,386.34 - Step 6: Final answer
x = 1,268,261,826.45
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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.