Finding the Fourth Proportional to 2,878,140,895.92, 3,971,761,262.93 and 1,607,991,420.20
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Solution
The fourth proportional to 2,878,140,895.92, 3,971,761,262.93 and 1,607,991,420.20 is: 2,218,987,278.53
Step by Step Solution
- Step 1: Write the proportion equation
2,878,140,895.92 : 3,971,761,262.93 = 1,607,991,420.20 : x - Step 2: Convert to fraction form
2,878,140,895.92/3,971,761,262.93 = 1,607,991,420.20/x - Step 3: Cross multiply
2,878,140,895.92x = 3,971,761,262.93 × 1,607,991,420.20 - Step 4: Simplify right side
2,878,140,895.92x = 6,386,558,033,858,317,312 - Step 5: Solve for x
x = 6,386,558,033,858,317,312/2,878,140,895.92 - Step 6: Final answer
x = 2,218,987,278.53
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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.