Finding the Fourth Proportional to 2,085,828.84, 2,878,484.58 and 1,361,140.20
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Solution
The fourth proportional to 2,085,828.84, 2,878,484.58 and 1,361,140.20 is: 1,878,400.09
Step by Step Solution
- Step 1: Write the proportion equation
2,085,828.84 : 2,878,484.58 = 1,361,140.20 : x - Step 2: Convert to fraction form
2,085,828.84/2,878,484.58 = 1,361,140.20/x - Step 3: Cross multiply
2,085,828.84x = 2,878,484.58 × 1,361,140.20 - Step 4: Simplify right side
2,085,828.84x = 3,918,021,076,918.12 - Step 5: Solve for x
x = 3,918,021,076,918.12/2,085,828.84 - Step 6: Final answer
x = 1,878,400.09
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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.