Finding the Fourth Proportional to 1,419,039,952.80, 2,128,559,929.20 and 838,564,663.20
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Solution
The fourth proportional to 1,419,039,952.80, 2,128,559,929.20 and 838,564,663.20 is: 1,257,846,994.80
Step by Step Solution
- Step 1: Write the proportion equation
1,419,039,952.80 : 2,128,559,929.20 = 838,564,663.20 : x - Step 2: Convert to fraction form
1,419,039,952.80/2,128,559,929.20 = 838,564,663.20/x - Step 3: Cross multiply
1,419,039,952.80x = 2,128,559,929.20 × 838,564,663.20 - Step 4: Simplify right side
1,419,039,952.80x = 1,784,935,140,130,614,016 - Step 5: Solve for x
x = 1,784,935,140,130,614,016/1,419,039,952.80 - Step 6: Final answer
x = 1,257,846,994.80
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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.