Finding the Fourth Proportional to 1,578,745,964.16, 2,178,643,043.52 and 873,882,823.68
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Solution
The fourth proportional to 1,578,745,964.16, 2,178,643,043.52 and 873,882,823.68 is: 1,205,943,690.68
Step by Step Solution
- Step 1: Write the proportion equation
1,578,745,964.16 : 2,178,643,043.52 = 873,882,823.68 : x - Step 2: Convert to fraction form
1,578,745,964.16/2,178,643,043.52 = 873,882,823.68/x - Step 3: Cross multiply
1,578,745,964.16x = 2,178,643,043.52 × 873,882,823.68 - Step 4: Simplify right side
1,578,745,964.16x = 1,903,878,734,662,046,720 - Step 5: Solve for x
x = 1,903,878,734,662,046,720/1,578,745,964.16 - Step 6: Final answer
x = 1,205,943,690.68
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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.