Finding the Fourth Proportional to 2,912,389.47, 4,018,206.85 and 1,688,450.78
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Solution
The fourth proportional to 2,912,389.47, 4,018,206.85 and 1,688,450.78 is: 2,329,545.74
Step by Step Solution
- Step 1: Write the proportion equation
2,912,389.47 : 4,018,206.85 = 1,688,450.78 : x - Step 2: Convert to fraction form
2,912,389.47/4,018,206.85 = 1,688,450.78/x - Step 3: Cross multiply
2,912,389.47x = 4,018,206.85 × 1,688,450.78 - Step 4: Simplify right side
2,912,389.47x = 6,784,544,495,908.23 - Step 5: Solve for x
x = 6,784,544,495,908.23/2,912,389.47 - Step 6: Final answer
x = 2,329,545.74
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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.