Finding the Fourth Proportional to 1,260,414,785.80, 1,889,346,720.30 and 742,578,675.40
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Solution
The fourth proportional to 1,260,414,785.80, 1,889,346,720.30 and 742,578,675.40 is: 1,113,116,571.42
Step by Step Solution
- Step 1: Write the proportion equation
1,260,414,785.80 : 1,889,346,720.30 = 742,578,675.40 : x - Step 2: Convert to fraction form
1,260,414,785.80/1,889,346,720.30 = 742,578,675.40/x - Step 3: Cross multiply
1,260,414,785.80x = 1,889,346,720.30 × 742,578,675.40 - Step 4: Simplify right side
1,260,414,785.80x = 1,402,988,584,931,708,160 - Step 5: Solve for x
x = 1,402,988,584,931,708,160/1,260,414,785.80 - Step 6: Final answer
x = 1,113,116,571.42
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.