Finding the Fourth Proportional to 5,235,697,805.92, 7,225,257,943.92 and 2,888,854,465.12
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Solution
The fourth proportional to 5,235,697,805.92, 7,225,257,943.92 and 2,888,854,465.12 is: 3,986,616,387.47
Step by Step Solution
- Step 1: Write the proportion equation
5,235,697,805.92 : 7,225,257,943.92 = 2,888,854,465.12 : x - Step 2: Convert to fraction form
5,235,697,805.92/7,225,257,943.92 = 2,888,854,465.12/x - Step 3: Cross multiply
5,235,697,805.92x = 7,225,257,943.92 × 2,888,854,465.12 - Step 4: Simplify right side
5,235,697,805.92x = 20,872,718,672,937,041,920 - Step 5: Solve for x
x = 20,872,718,672,937,041,920/5,235,697,805.92 - Step 6: Final answer
x = 3,986,616,387.47
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1.5x scale
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.