Finding the Fourth Proportional to 1,547,338,891.20, 2,321,008,336.80 and 772,497,913.20
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Solution
The fourth proportional to 1,547,338,891.20, 2,321,008,336.80 and 772,497,913.20 is: 1,158,746,869.80
Step by Step Solution
- Step 1: Write the proportion equation
1,547,338,891.20 : 2,321,008,336.80 = 772,497,913.20 : x - Step 2: Convert to fraction form
1,547,338,891.20/2,321,008,336.80 = 772,497,913.20/x - Step 3: Cross multiply
1,547,338,891.20x = 2,321,008,336.80 × 772,497,913.20 - Step 4: Simplify right side
1,547,338,891.20x = 1,792,974,096,697,803,008 - Step 5: Solve for x
x = 1,792,974,096,697,803,008/1,547,338,891.20 - Step 6: Final answer
x = 1,158,746,869.80
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1.5x scale
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.