Finding the Fourth Proportional to 5,637,639.40, 7,778,132.58 and 3,156,495.08
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Solution
The fourth proportional to 5,637,639.40, 7,778,132.58 and 3,156,495.08 is: 4,354,949.91
Step by Step Solution
- Step 1: Write the proportion equation
5,637,639.40 : 7,778,132.58 = 3,156,495.08 : x - Step 2: Convert to fraction form
5,637,639.40/7,778,132.58 = 3,156,495.08/x - Step 3: Cross multiply
5,637,639.40x = 7,778,132.58 × 3,156,495.08 - Step 4: Simplify right side
5,637,639.40x = 24,551,637,220,357.71 - Step 5: Solve for x
x = 24,551,637,220,357.71/5,637,639.40 - Step 6: Final answer
x = 4,354,949.91
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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.