Finding the Fourth Proportional to 1,563,620,736.12, 2,345,719,444.80 and 514,417,990.20
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Solution
The fourth proportional to 1,563,620,736.12, 2,345,719,444.80 and 514,417,990.20 is: 771,721,846.92
Step by Step Solution
- Step 1: Write the proportion equation
1,563,620,736.12 : 2,345,719,444.80 = 514,417,990.20 : x - Step 2: Convert to fraction form
1,563,620,736.12/2,345,719,444.80 = 514,417,990.20/x - Step 3: Cross multiply
1,563,620,736.12x = 2,345,719,444.80 × 514,417,990.20 - Step 4: Simplify right side
1,563,620,736.12x = 1,206,680,282,367,075,840 - Step 5: Solve for x
x = 1,206,680,282,367,075,840/1,563,620,736.12 - Step 6: Final answer
x = 771,721,846.92
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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.